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Finding the Fourth Proportional to 12,664.74, 18,995.46 and 3,899.46

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Solution

The fourth proportional to 12,664.74, 18,995.46 and 3,899.46 is: 5,848.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.74 : 18,995.46 = 3,899.46 : x
  2. Step 2: Convert to fraction form
    12,664.74/18,995.46 = 3,899.46/x
  3. Step 3: Cross multiply
    12,664.74x = 18,995.46 × 3,899.46
  4. Step 4: Simplify right side
    12,664.74x = 74,072,036.45
  5. Step 5: Solve for x
    x = 74,072,036.45/12,664.74
  6. Step 6: Final answer
    x = 5,848.68

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