Finding the Fourth Proportional to 10,710.20, 14,777.86 and 7,351.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,710.20 : 14,777.86 = 7,351.78 : x
2. Step 2: Convert to fraction form
   10,710.20/14,777.86 = 7,351.78/x
3. Step 3: Cross multiply
   10,710.20x = 14,777.86 × 7,351.78
4. Step 4: Simplify right side
   10,710.20x = 108,643,575.59
5. Step 5: Solve for x
   x = 108,643,575.59/10,710.20
6. Step 6: Final answer
   x = 10,143.94