Finding the Fourth Proportional to 22,981.55, 31,722.57 and 13,549.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,981.55 : 31,722.57 = 13,549.50 : x
2. Step 2: Convert to fraction form
   22,981.55/31,722.57 = 13,549.50/x
3. Step 3: Cross multiply
   22,981.55x = 31,722.57 × 13,549.50
4. Step 4: Simplify right side
   22,981.55x = 429,824,962.22
5. Step 5: Solve for x
   x = 429,824,962.22/22,981.55
6. Step 6: Final answer
   x = 18,703.05