Finding the Fourth Proportional to 9,340.47, 12,890.75 and 5,362.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,340.47 : 12,890.75 = 5,362.29 : x
2. Step 2: Convert to fraction form
   9,340.47/12,890.75 = 5,362.29/x
3. Step 3: Cross multiply
   9,340.47x = 12,890.75 × 5,362.29
4. Step 4: Simplify right side
   9,340.47x = 69,123,913.01
5. Step 5: Solve for x
   x = 69,123,913.01/9,340.47
6. Step 6: Final answer
   x = 7,400.47