Finding the Fourth Proportional to 38,981.50, 58,498.20 and 14,357.50

Step by Step Solution

1. Step 1: Write the proportion equation
   38,981.50 : 58,498.20 = 14,357.50 : x
2. Step 2: Convert to fraction form
   38,981.50/58,498.20 = 14,357.50/x
3. Step 3: Cross multiply
   38,981.50x = 58,498.20 × 14,357.50
4. Step 4: Simplify right side
   38,981.50x = 839,887,906.50
5. Step 5: Solve for x
   x = 839,887,906.50/38,981.50
6. Step 6: Final answer
   x = 21,545.81