Finding the Fourth Proportional to 22,621.71, 31,211.64 and 17,826.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,621.71 : 31,211.64 = 17,826.78 : x
2. Step 2: Convert to fraction form
   22,621.71/31,211.64 = 17,826.78/x
3. Step 3: Cross multiply
   22,621.71x = 31,211.64 × 17,826.78
4. Step 4: Simplify right side
   22,621.71x = 556,403,039.72
5. Step 5: Solve for x
   x = 556,403,039.72/22,621.71
6. Step 6: Final answer
   x = 24,595.98