Finding the Fourth Proportional to 12,538.89, 17,291.73 and 7,502.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,538.89 : 17,291.73 = 7,502.31 : x
2. Step 2: Convert to fraction form
   12,538.89/17,291.73 = 7,502.31/x
3. Step 3: Cross multiply
   12,538.89x = 17,291.73 × 7,502.31
4. Step 4: Simplify right side
   12,538.89x = 129,727,918.90
5. Step 5: Solve for x
   x = 129,727,918.90/12,538.89
6. Step 6: Final answer
   x = 10,346.04