Finding the Fourth Proportional to 9,330.95, 12,877.65 and 5,353.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,330.95 : 12,877.65 = 5,353.31 : x
2. Step 2: Convert to fraction form
   9,330.95/12,877.65 = 5,353.31/x
3. Step 3: Cross multiply
   9,330.95x = 12,877.65 × 5,353.31
4. Step 4: Simplify right side
   9,330.95x = 68,938,084.72
5. Step 5: Solve for x
   x = 68,938,084.72/9,330.95
6. Step 6: Final answer
   x = 7,388.11