Finding the Fourth Proportional to 22,551.72, 31,118.34 and 13,113

Step by Step Solution

1. Step 1: Write the proportion equation
   22,551.72 : 31,118.34 = 13,113 : x
2. Step 2: Convert to fraction form
   22,551.72/31,118.34 = 13,113/x
3. Step 3: Cross multiply
   22,551.72x = 31,118.34 × 13,113
4. Step 4: Simplify right side
   22,551.72x = 408,054,792.42
5. Step 5: Solve for x
   x = 408,054,792.42/22,551.72
6. Step 6: Final answer
   x = 18,094.18