Finding the Fourth Proportional to 7,557.71, 10,429.31 and 4,200.71

Step by Step Solution

1. Step 1: Write the proportion equation
   7,557.71 : 10,429.31 = 4,200.71 : x
2. Step 2: Convert to fraction form
   7,557.71/10,429.31 = 4,200.71/x
3. Step 3: Cross multiply
   7,557.71x = 10,429.31 × 4,200.71
4. Step 4: Simplify right side
   7,557.71x = 43,810,500.20
5. Step 5: Solve for x
   x = 43,810,500.20/7,557.71
6. Step 6: Final answer
   x = 5,796.80