Finding the Fourth Proportional to 7,139.48, 9,851.61 and 3,952.53

Step by Step Solution

1. Step 1: Write the proportion equation
   7,139.48 : 9,851.61 = 3,952.53 : x
2. Step 2: Convert to fraction form
   7,139.48/9,851.61 = 3,952.53/x
3. Step 3: Cross multiply
   7,139.48x = 9,851.61 × 3,952.53
4. Step 4: Simplify right side
   7,139.48x = 38,938,784.07
5. Step 5: Solve for x
   x = 38,938,784.07/7,139.48
6. Step 6: Final answer
   x = 5,454.01