Finding the Fourth Proportional to 22,857.98, 34,258.70 and 13,488.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,857.98 : 34,258.70 = 13,488.50 : x
2. Step 2: Convert to fraction form
   22,857.98/34,258.70 = 13,488.50/x
3. Step 3: Cross multiply
   22,857.98x = 34,258.70 × 13,488.50
4. Step 4: Simplify right side
   22,857.98x = 462,098,474.95
5. Step 5: Solve for x
   x = 462,098,474.95/22,857.98
6. Step 6: Final answer
   x = 20,216.07