Finding the Fourth Proportional to 14,978.97, 22,461.30 and 5,115.60

Step by Step Solution

1. Step 1: Write the proportion equation
   14,978.97 : 22,461.30 = 5,115.60 : x
2. Step 2: Convert to fraction form
   14,978.97/22,461.30 = 5,115.60/x
3. Step 3: Cross multiply
   14,978.97x = 22,461.30 × 5,115.60
4. Step 4: Simplify right side
   14,978.97x = 114,903,026.28
5. Step 5: Solve for x
   x = 114,903,026.28/14,978.97
6. Step 6: Final answer
   x = 7,670.96