Finding the Fourth Proportional to 22,522.10, 31,088.85 and 13,570.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,522.10 : 31,088.85 = 13,570.10 : x
2. Step 2: Convert to fraction form
   22,522.10/31,088.85 = 13,570.10/x
3. Step 3: Cross multiply
   22,522.10x = 31,088.85 × 13,570.10
4. Step 4: Simplify right side
   22,522.10x = 421,878,803.39
5. Step 5: Solve for x
   x = 421,878,803.39/22,522.10
6. Step 6: Final answer
   x = 18,731.77