Finding the Fourth Proportional to 9,916.06, 13,684.05 and 5,724.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,916.06 : 13,684.05 = 5,724.22 : x
2. Step 2: Convert to fraction form
   9,916.06/13,684.05 = 5,724.22/x
3. Step 3: Cross multiply
   9,916.06x = 13,684.05 × 5,724.22
4. Step 4: Simplify right side
   9,916.06x = 78,330,512.69
5. Step 5: Solve for x
   x = 78,330,512.69/9,916.06
6. Step 6: Final answer
   x = 7,899.36