Finding the Fourth Proportional to 12,792.59, 17,642.98 and 8,312.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,792.59 : 17,642.98 = 8,312.89 : x
2. Step 2: Convert to fraction form
   12,792.59/17,642.98 = 8,312.89/x
3. Step 3: Cross multiply
   12,792.59x = 17,642.98 × 8,312.89
4. Step 4: Simplify right side
   12,792.59x = 146,664,152.01
5. Step 5: Solve for x
   x = 146,664,152.01/12,792.59
6. Step 6: Final answer
   x = 11,464.77