Finding the Fourth Proportional to 22,071.56, 30,468.57 and 13,121.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,071.56 : 30,468.57 = 13,121.96 : x
2. Step 2: Convert to fraction form
   22,071.56/30,468.57 = 13,121.96/x
3. Step 3: Cross multiply
   22,071.56x = 30,468.57 × 13,121.96
4. Step 4: Simplify right side
   22,071.56x = 399,807,356.80
5. Step 5: Solve for x
   x = 399,807,356.80/22,071.56
6. Step 6: Final answer
   x = 18,114.14