Finding the Fourth Proportional to 7,100.61, 10,650.43 and 2,939.55

Step by Step Solution

1. Step 1: Write the proportion equation
   7,100.61 : 10,650.43 = 2,939.55 : x
2. Step 2: Convert to fraction form
   7,100.61/10,650.43 = 2,939.55/x
3. Step 3: Cross multiply
   7,100.61x = 10,650.43 × 2,939.55
4. Step 4: Simplify right side
   7,100.61x = 31,307,471.51
5. Step 5: Solve for x
   x = 31,307,471.51/7,100.61
6. Step 6: Final answer
   x = 4,409.12