Finding the Fourth Proportional to 9,362.76, 12,923.16 and 5,385.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,362.76 : 12,923.16 = 5,385.12 : x
2. Step 2: Convert to fraction form
   9,362.76/12,923.16 = 5,385.12/x
3. Step 3: Cross multiply
   9,362.76x = 12,923.16 × 5,385.12
4. Step 4: Simplify right side
   9,362.76x = 69,592,767.38
5. Step 5: Solve for x
   x = 69,592,767.38/9,362.76
6. Step 6: Final answer
   x = 7,432.93