Finding the Fourth Proportional to 22,111.57, 30,516.40 and 13,611.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,111.57 : 30,516.40 = 13,611.98 : x
2. Step 2: Convert to fraction form
   22,111.57/30,516.40 = 13,611.98/x
3. Step 3: Cross multiply
   22,111.57x = 30,516.40 × 13,611.98
4. Step 4: Simplify right side
   22,111.57x = 415,388,643.21
5. Step 5: Solve for x
   x = 415,388,643.21/22,111.57
6. Step 6: Final answer
   x = 18,786.03