Finding the Fourth Proportional to 12,625.32, 17,420.22 and 8,445.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,625.32 : 17,420.22 = 8,445.72 : x
2. Step 2: Convert to fraction form
   12,625.32/17,420.22 = 8,445.72/x
3. Step 3: Cross multiply
   12,625.32x = 17,420.22 × 8,445.72
4. Step 4: Simplify right side
   12,625.32x = 147,126,300.46
5. Step 5: Solve for x
   x = 147,126,300.46/12,625.32
6. Step 6: Final answer
   x = 11,653.27