Finding the Fourth Proportional to 17,155.40, 23,672.45 and 9,602.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,155.40 : 23,672.45 = 9,602.15 : x
2. Step 2: Convert to fraction form
   17,155.40/23,672.45 = 9,602.15/x
3. Step 3: Cross multiply
   17,155.40x = 23,672.45 × 9,602.15
4. Step 4: Simplify right side
   17,155.40x = 227,306,321.41
5. Step 5: Solve for x
   x = 227,306,321.41/17,155.40
6. Step 6: Final answer
   x = 13,249.84