Finding the Fourth Proportional to 7,020.28, 9,687.63 and 3,875.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,020.28 : 9,687.63 = 3,875.86 : x
2. Step 2: Convert to fraction form
   7,020.28/9,687.63 = 3,875.86/x
3. Step 3: Cross multiply
   7,020.28x = 9,687.63 × 3,875.86
4. Step 4: Simplify right side
   7,020.28x = 37,547,897.61
5. Step 5: Solve for x
   x = 37,547,897.61/7,020.28
6. Step 6: Final answer
   x = 5,348.49