Finding the Fourth Proportional to 5,378.91, 8,061.08 and 3,997.46

Step by Step Solution

1. Step 1: Write the proportion equation
   5,378.91 : 8,061.08 = 3,997.46 : x
2. Step 2: Convert to fraction form
   5,378.91/8,061.08 = 3,997.46/x
3. Step 3: Cross multiply
   5,378.91x = 8,061.08 × 3,997.46
4. Step 4: Simplify right side
   5,378.91x = 32,223,784.56
5. Step 5: Solve for x
   x = 32,223,784.56/5,378.91
6. Step 6: Final answer
   x = 5,990.76