Finding the Fourth Proportional to 7,020.42, 9,688.18 and 3,876.81

Step by Step Solution

1. Step 1: Write the proportion equation
   7,020.42 : 9,688.18 = 3,876.81 : x
2. Step 2: Convert to fraction form
   7,020.42/9,688.18 = 3,876.81/x
3. Step 3: Cross multiply
   7,020.42x = 9,688.18 × 3,876.81
4. Step 4: Simplify right side
   7,020.42x = 37,559,259.75
5. Step 5: Solve for x
   x = 37,559,259.75/7,020.42
6. Step 6: Final answer
   x = 5,350.00