Finding the Fourth Proportional to 16,981.80, 25,456.29 and 5,880.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,981.80 : 25,456.29 = 5,880.15 : x
2. Step 2: Convert to fraction form
   16,981.80/25,456.29 = 5,880.15/x
3. Step 3: Cross multiply
   16,981.80x = 25,456.29 × 5,880.15
4. Step 4: Simplify right side
   16,981.80x = 149,686,803.64
5. Step 5: Solve for x
   x = 149,686,803.64/16,981.80
6. Step 6: Final answer
   x = 8,814.54