Finding the Fourth Proportional to 9,359.37, 12,916.41 and 5,380.85

Step by Step Solution

1. Step 1: Write the proportion equation
   9,359.37 : 12,916.41 = 5,380.85 : x
2. Step 2: Convert to fraction form
   9,359.37/12,916.41 = 5,380.85/x
3. Step 3: Cross multiply
   9,359.37x = 12,916.41 × 5,380.85
4. Step 4: Simplify right side
   9,359.37x = 69,501,200.17
5. Step 5: Solve for x
   x = 69,501,200.17/9,359.37
6. Step 6: Final answer
   x = 7,425.84