Finding the Fourth Proportional to 7,747.31, 10,691.29 and 4,210.53

Step by Step Solution

1. Step 1: Write the proportion equation
   7,747.31 : 10,691.29 = 4,210.53 : x
2. Step 2: Convert to fraction form
   7,747.31/10,691.29 = 4,210.53/x
3. Step 3: Cross multiply
   7,747.31x = 10,691.29 × 4,210.53
4. Step 4: Simplify right side
   7,747.31x = 45,016,022.59
5. Step 5: Solve for x
   x = 45,016,022.59/7,747.31
6. Step 6: Final answer
   x = 5,810.53