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Finding the Fourth Proportional to 7,128.80, 10,697.79 and 3,844.18

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Solution

The fourth proportional to 7,128.80, 10,697.79 and 3,844.18 is: 5,768.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.80 : 10,697.79 = 3,844.18 : x
  2. Step 2: Convert to fraction form
    7,128.80/10,697.79 = 3,844.18/x
  3. Step 3: Cross multiply
    7,128.80x = 10,697.79 × 3,844.18
  4. Step 4: Simplify right side
    7,128.80x = 41,124,230.36
  5. Step 5: Solve for x
    x = 41,124,230.36/7,128.80
  6. Step 6: Final answer
    x = 5,768.75

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