Finding the Fourth Proportional to 9,359.48, 12,914.70 and 5,380.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,359.48 : 12,914.70 = 5,380.76 : x
2. Step 2: Convert to fraction form
   9,359.48/12,914.70 = 5,380.76/x
3. Step 3: Cross multiply
   9,359.48x = 12,914.70 × 5,380.76
4. Step 4: Simplify right side
   9,359.48x = 69,490,901.17
5. Step 5: Solve for x
   x = 69,490,901.17/9,359.48
6. Step 6: Final answer
   x = 7,424.65