Finding the Fourth Proportional to 17,429.34, 26,139.15 and 12,484.29

Step by Step Solution

1. Step 1: Write the proportion equation
   17,429.34 : 26,139.15 = 12,484.29 : x
2. Step 2: Convert to fraction form
   17,429.34/26,139.15 = 12,484.29/x
3. Step 3: Cross multiply
   17,429.34x = 26,139.15 × 12,484.29
4. Step 4: Simplify right side
   17,429.34x = 326,328,728.95
5. Step 5: Solve for x
   x = 326,328,728.95/17,429.34
6. Step 6: Final answer
   x = 18,722.95