Finding the Fourth Proportional to 9,861.60, 13,606.78 and 5,881.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,861.60 : 13,606.78 = 5,881.94 : x
2. Step 2: Convert to fraction form
   9,861.60/13,606.78 = 5,881.94/x
3. Step 3: Cross multiply
   9,861.60x = 13,606.78 × 5,881.94
4. Step 4: Simplify right side
   9,861.60x = 80,034,263.55
5. Step 5: Solve for x
   x = 80,034,263.55/9,861.60
6. Step 6: Final answer
   x = 8,115.75