Finding the Fourth Proportional to 7,114.61, 9,818.71 and 3,928.52

Step by Step Solution

1. Step 1: Write the proportion equation
   7,114.61 : 9,818.71 = 3,928.52 : x
2. Step 2: Convert to fraction form
   7,114.61/9,818.71 = 3,928.52/x
3. Step 3: Cross multiply
   7,114.61x = 9,818.71 × 3,928.52
4. Step 4: Simplify right side
   7,114.61x = 38,572,998.61
5. Step 5: Solve for x
   x = 38,572,998.61/7,114.61
6. Step 6: Final answer
   x = 5,421.66