Finding the Fourth Proportional to 12,792.58, 17,602.59 and 9,807.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,792.58 : 17,602.59 = 9,807.28 : x
2. Step 2: Convert to fraction form
   12,792.58/17,602.59 = 9,807.28/x
3. Step 3: Cross multiply
   12,792.58x = 17,602.59 × 9,807.28
4. Step 4: Simplify right side
   12,792.58x = 172,633,528.86
5. Step 5: Solve for x
   x = 172,633,528.86/12,792.58
6. Step 6: Final answer
   x = 13,494.82