Finding the Fourth Proportional to 7,407.15, 11,105.47 and 3,706.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,407.15 : 11,105.47 = 3,706.72 : x
2. Step 2: Convert to fraction form
   7,407.15/11,105.47 = 3,706.72/x
3. Step 3: Cross multiply
   7,407.15x = 11,105.47 × 3,706.72
4. Step 4: Simplify right side
   7,407.15x = 41,164,867.76
5. Step 5: Solve for x
   x = 41,164,867.76/7,407.15
6. Step 6: Final answer
   x = 5,557.45