Finding the Fourth Proportional to 12,892.12, 17,790.78 and 7,587.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,892.12 : 17,790.78 = 7,587.25 : x
2. Step 2: Convert to fraction form
   12,892.12/17,790.78 = 7,587.25/x
3. Step 3: Cross multiply
   12,892.12x = 17,790.78 × 7,587.25
4. Step 4: Simplify right side
   12,892.12x = 134,983,095.56
5. Step 5: Solve for x
   x = 134,983,095.56/12,892.12
6. Step 6: Final answer
   x = 10,470.20