Finding the Fourth Proportional to 5,276.32, 7,897.31 and 3,889.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,276.32 : 7,897.31 = 3,889.10 : x
2. Step 2: Convert to fraction form
   5,276.32/7,897.31 = 3,889.10/x
3. Step 3: Cross multiply
   5,276.32x = 7,897.31 × 3,889.10
4. Step 4: Simplify right side
   5,276.32x = 30,713,428.32
5. Step 5: Solve for x
   x = 30,713,428.32/5,276.32
6. Step 6: Final answer
   x = 5,820.99