Finding the Fourth Proportional to 17,042.31, 25,528.86 and 8,603.61

Step by Step Solution

1. Step 1: Write the proportion equation
   17,042.31 : 25,528.86 = 8,603.61 : x
2. Step 2: Convert to fraction form
   17,042.31/25,528.86 = 8,603.61/x
3. Step 3: Cross multiply
   17,042.31x = 25,528.86 × 8,603.61
4. Step 4: Simplify right side
   17,042.31x = 219,640,355.18
5. Step 5: Solve for x
   x = 219,640,355.18/17,042.31
6. Step 6: Final answer
   x = 12,887.95