Finding the Fourth Proportional to 22,928.28, 31,646.66 and 13,980.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,928.28 : 31,646.66 = 13,980.72 : x
2. Step 2: Convert to fraction form
   22,928.28/31,646.66 = 13,980.72/x
3. Step 3: Cross multiply
   22,928.28x = 31,646.66 × 13,980.72
4. Step 4: Simplify right side
   22,928.28x = 442,443,092.40
5. Step 5: Solve for x
   x = 442,443,092.40/22,928.28
6. Step 6: Final answer
   x = 19,296.83