Finding the Fourth Proportional to 9,038.61, 12,471.80 and 5,679.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,038.61 : 12,471.80 = 5,679.04 : x
2. Step 2: Convert to fraction form
   9,038.61/12,471.80 = 5,679.04/x
3. Step 3: Cross multiply
   9,038.61x = 12,471.80 × 5,679.04
4. Step 4: Simplify right side
   9,038.61x = 70,827,887.85
5. Step 5: Solve for x
   x = 70,827,887.85/9,038.61
6. Step 6: Final answer
   x = 7,836.15