Finding the Fourth Proportional to 9,860.72, 13,611.26 and 5,881.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9,860.72 : 13,611.26 = 5,881.83 : x
2. Step 2: Convert to fraction form
   9,860.72/13,611.26 = 5,881.83/x
3. Step 3: Cross multiply
   9,860.72x = 13,611.26 × 5,881.83
4. Step 4: Simplify right side
   9,860.72x = 80,059,147.05
5. Step 5: Solve for x
   x = 80,059,147.05/9,860.72
6. Step 6: Final answer
   x = 8,118.99