Finding the Fourth Proportional to 12,627.84, 17,422.92 and 8,151.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,627.84 : 17,422.92 = 8,151.78 : x
2. Step 2: Convert to fraction form
   12,627.84/17,422.92 = 8,151.78/x
3. Step 3: Cross multiply
   12,627.84x = 17,422.92 × 8,151.78
4. Step 4: Simplify right side
   12,627.84x = 142,027,810.80
5. Step 5: Solve for x
   x = 142,027,810.80/12,627.84
6. Step 6: Final answer
   x = 11,247.20