Finding the Fourth Proportional to 9,310.80, 12,848.81 and 5,061.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,310.80 : 12,848.81 = 5,061.99 : x
2. Step 2: Convert to fraction form
   9,310.80/12,848.81 = 5,061.99/x
3. Step 3: Cross multiply
   9,310.80x = 12,848.81 × 5,061.99
4. Step 4: Simplify right side
   9,310.80x = 65,040,522.42
5. Step 5: Solve for x
   x = 65,040,522.42/9,310.80
6. Step 6: Final answer
   x = 6,985.49