Finding the Fourth Proportional to 9,061.40, 12,504.83 and 5,028.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,061.40 : 12,504.83 = 5,028.31 : x
2. Step 2: Convert to fraction form
   9,061.40/12,504.83 = 5,028.31/x
3. Step 3: Cross multiply
   9,061.40x = 12,504.83 × 5,028.31
4. Step 4: Simplify right side
   9,061.40x = 62,878,099.21
5. Step 5: Solve for x
   x = 62,878,099.21/9,061.40
6. Step 6: Final answer
   x = 6,939.12