Finding the Fourth Proportional to 22,290.51, 30,759.98 and 13,332.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,290.51 : 30,759.98 = 13,332.72 : x
2. Step 2: Convert to fraction form
   22,290.51/30,759.98 = 13,332.72/x
3. Step 3: Cross multiply
   22,290.51x = 30,759.98 × 13,332.72
4. Step 4: Simplify right side
   22,290.51x = 410,114,200.55
5. Step 5: Solve for x
   x = 410,114,200.55/22,290.51
6. Step 6: Final answer
   x = 18,398.60