Finding the Fourth Proportional to 22,572.74, 31,155.57 and 15,019.39

Step by Step Solution

1. Step 1: Write the proportion equation
   22,572.74 : 31,155.57 = 15,019.39 : x
2. Step 2: Convert to fraction form
   22,572.74/31,155.57 = 15,019.39/x
3. Step 3: Cross multiply
   22,572.74x = 31,155.57 × 15,019.39
4. Step 4: Simplify right side
   22,572.74x = 467,937,656.50
5. Step 5: Solve for x
   x = 467,937,656.50/22,572.74
6. Step 6: Final answer
   x = 20,730.21