Finding the Fourth Proportional to 14,978.32, 20,670.20 and 8,264.16

Step by Step Solution

1. Step 1: Write the proportion equation
   14,978.32 : 20,670.20 = 8,264.16 : x
2. Step 2: Convert to fraction form
   14,978.32/20,670.20 = 8,264.16/x
3. Step 3: Cross multiply
   14,978.32x = 20,670.20 × 8,264.16
4. Step 4: Simplify right side
   14,978.32x = 170,821,840.03
5. Step 5: Solve for x
   x = 170,821,840.03/14,978.32
6. Step 6: Final answer
   x = 11,404.61