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Finding the Fourth Proportional to 17,096.80, 25,664.40 and 13,218.40

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Solution

The fourth proportional to 17,096.80, 25,664.40 and 13,218.40 is: 19,842.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,096.80 : 25,664.40 = 13,218.40 : x
  2. Step 2: Convert to fraction form
    17,096.80/25,664.40 = 13,218.40/x
  3. Step 3: Cross multiply
    17,096.80x = 25,664.40 × 13,218.40
  4. Step 4: Simplify right side
    17,096.80x = 339,242,304.96
  5. Step 5: Solve for x
    x = 339,242,304.96/17,096.80
  6. Step 6: Final answer
    x = 19,842.44

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