Finding the Fourth Proportional to 12,537, 17,296.76 and 7,155.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,537 : 17,296.76 = 7,155.60 : x
2. Step 2: Convert to fraction form
   12,537/17,296.76 = 7,155.60/x
3. Step 3: Cross multiply
   12,537x = 17,296.76 × 7,155.60
4. Step 4: Simplify right side
   12,537x = 123,768,695.86
5. Step 5: Solve for x
   x = 123,768,695.86/12,537
6. Step 6: Final answer
   x = 9,872.27