Finding the Fourth Proportional to 9,856.84, 13,604.05 and 5,880.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,856.84 : 13,604.05 = 5,880.30 : x
2. Step 2: Convert to fraction form
   9,856.84/13,604.05 = 5,880.30/x
3. Step 3: Cross multiply
   9,856.84x = 13,604.05 × 5,880.30
4. Step 4: Simplify right side
   9,856.84x = 79,995,851.55
5. Step 5: Solve for x
   x = 79,995,851.55/9,856.84
6. Step 6: Final answer
   x = 8,115.77