Finding the Fourth Proportional to 5,384.48, 8,071.14 and 3,900.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,384.48 : 8,071.14 = 3,900.05 : x
2. Step 2: Convert to fraction form
   5,384.48/8,071.14 = 3,900.05/x
3. Step 3: Cross multiply
   5,384.48x = 8,071.14 × 3,900.05
4. Step 4: Simplify right side
   5,384.48x = 31,477,854.09
5. Step 5: Solve for x
   x = 31,477,854.09/5,384.48
6. Step 6: Final answer
   x = 5,846.04