Finding the Fourth Proportional to 9,308.07, 12,847.10 and 5,902.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,308.07 : 12,847.10 = 5,902.88 : x
2. Step 2: Convert to fraction form
   9,308.07/12,847.10 = 5,902.88/x
3. Step 3: Cross multiply
   9,308.07x = 12,847.10 × 5,902.88
4. Step 4: Simplify right side
   9,308.07x = 75,834,795.90
5. Step 5: Solve for x
   x = 75,834,795.90/9,308.07
6. Step 6: Final answer
   x = 8,147.21