Finding the Fourth Proportional to 12,445.85, 18,625.82 and 7,700.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,445.85 : 18,625.82 = 7,700.06 : x
2. Step 2: Convert to fraction form
   12,445.85/18,625.82 = 7,700.06/x
3. Step 3: Cross multiply
   12,445.85x = 18,625.82 × 7,700.06
4. Step 4: Simplify right side
   12,445.85x = 143,419,931.55
5. Step 5: Solve for x
   x = 143,419,931.55/12,445.85
6. Step 6: Final answer
   x = 11,523.51