Finding the Fourth Proportional to 7,232.31, 9,980.37 and 5,105.61

Step by Step Solution

1. Step 1: Write the proportion equation
   7,232.31 : 9,980.37 = 5,105.61 : x
2. Step 2: Convert to fraction form
   7,232.31/9,980.37 = 5,105.61/x
3. Step 3: Cross multiply
   7,232.31x = 9,980.37 × 5,105.61
4. Step 4: Simplify right side
   7,232.31x = 50,955,876.88
5. Step 5: Solve for x
   x = 50,955,876.88/7,232.31
6. Step 6: Final answer
   x = 7,045.59