Finding the Fourth Proportional to 12,641.33, 17,449.32 and 7,337.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,641.33 : 17,449.32 = 7,337.86 : x
2. Step 2: Convert to fraction form
   12,641.33/17,449.32 = 7,337.86/x
3. Step 3: Cross multiply
   12,641.33x = 17,449.32 × 7,337.86
4. Step 4: Simplify right side
   12,641.33x = 128,040,651.15
5. Step 5: Solve for x
   x = 128,040,651.15/12,641.33
6. Step 6: Final answer
   x = 10,128.73