Finding the Fourth Proportional to 13,287.16, 19,908.78 and 5,880.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,287.16 : 19,908.78 = 5,880.52 : x
2. Step 2: Convert to fraction form
   13,287.16/19,908.78 = 5,880.52/x
3. Step 3: Cross multiply
   13,287.16x = 19,908.78 × 5,880.52
4. Step 4: Simplify right side
   13,287.16x = 117,073,978.97
5. Step 5: Solve for x
   x = 117,073,978.97/13,287.16
6. Step 6: Final answer
   x = 8,811.06