Finding the Fourth Proportional to 14,978.60, 22,419.30 and 14,978.60

Step by Step Solution

1. Step 1: Write the proportion equation
   14,978.60 : 22,419.30 = 14,978.60 : x
2. Step 2: Convert to fraction form
   14,978.60/22,419.30 = 14,978.60/x
3. Step 3: Cross multiply
   14,978.60x = 22,419.30 × 14,978.60
4. Step 4: Simplify right side
   14,978.60x = 335,809,726.98
5. Step 5: Solve for x
   x = 335,809,726.98/14,978.60
6. Step 6: Final answer
   x = 22,419.30