Finding the Fourth Proportional to 11,426.50, 17,140.13 and 3,929.99

Step by Step Solution

1. Step 1: Write the proportion equation
   11,426.50 : 17,140.13 = 3,929.99 : x
2. Step 2: Convert to fraction form
   11,426.50/17,140.13 = 3,929.99/x
3. Step 3: Cross multiply
   11,426.50x = 17,140.13 × 3,929.99
4. Step 4: Simplify right side
   11,426.50x = 67,360,443.36
5. Step 5: Solve for x
   x = 67,360,443.36/11,426.50
6. Step 6: Final answer
   x = 5,895.11