Finding the Fourth Proportional to 15,480.10, 21,362.16 and 8,766.10

Step by Step Solution

1. Step 1: Write the proportion equation
   15,480.10 : 21,362.16 = 8,766.10 : x
2. Step 2: Convert to fraction form
   15,480.10/21,362.16 = 8,766.10/x
3. Step 3: Cross multiply
   15,480.10x = 21,362.16 × 8,766.10
4. Step 4: Simplify right side
   15,480.10x = 187,262,830.78
5. Step 5: Solve for x
   x = 187,262,830.78/15,480.10
6. Step 6: Final answer
   x = 12,097.00