Finding the Fourth Proportional to 12,622.74, 17,423.33 and 8,146.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,622.74 : 17,423.33 = 8,146.50 : x
2. Step 2: Convert to fraction form
   12,622.74/17,423.33 = 8,146.50/x
3. Step 3: Cross multiply
   12,622.74x = 17,423.33 × 8,146.50
4. Step 4: Simplify right side
   12,622.74x = 141,939,117.11
5. Step 5: Solve for x
   x = 141,939,117.11/12,622.74
6. Step 6: Final answer
   x = 11,244.72