Finding the Fourth Proportional to 7,127.34, 9,835.43 and 3,897.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,127.34 : 9,835.43 = 3,897.10 : x
2. Step 2: Convert to fraction form
   7,127.34/9,835.43 = 3,897.10/x
3. Step 3: Cross multiply
   7,127.34x = 9,835.43 × 3,897.10
4. Step 4: Simplify right side
   7,127.34x = 38,329,665.50
5. Step 5: Solve for x
   x = 38,329,665.50/7,127.34
6. Step 6: Final answer
   x = 5,377.83