Finding the Fourth Proportional to 12,892.32, 17,792.52 and 7,855.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,892.32 : 17,792.52 = 7,855.32 : x
2. Step 2: Convert to fraction form
   12,892.32/17,792.52 = 7,855.32/x
3. Step 3: Cross multiply
   12,892.32x = 17,792.52 × 7,855.32
4. Step 4: Simplify right side
   12,892.32x = 139,765,938.21
5. Step 5: Solve for x
   x = 139,765,938.21/12,892.32
6. Step 6: Final answer
   x = 10,841.02