Finding the Fourth Proportional to 14,057.59, 19,400.30 and 7,770.55

Step by Step Solution

1. Step 1: Write the proportion equation
   14,057.59 : 19,400.30 = 7,770.55 : x
2. Step 2: Convert to fraction form
   14,057.59/19,400.30 = 7,770.55/x
3. Step 3: Cross multiply
   14,057.59x = 19,400.30 × 7,770.55
4. Step 4: Simplify right side
   14,057.59x = 150,751,001.17
5. Step 5: Solve for x
   x = 150,751,001.17/14,057.59
6. Step 6: Final answer
   x = 10,723.82