Finding the Fourth Proportional to 11,706.72, 16,155.72 and 6,401.22

Step by Step Solution

1. Step 1: Write the proportion equation
   11,706.72 : 16,155.72 = 6,401.22 : x
2. Step 2: Convert to fraction form
   11,706.72/16,155.72 = 6,401.22/x
3. Step 3: Cross multiply
   11,706.72x = 16,155.72 × 6,401.22
4. Step 4: Simplify right side
   11,706.72x = 103,416,317.98
5. Step 5: Solve for x
   x = 103,416,317.98/11,706.72
6. Step 6: Final answer
   x = 8,833.93