Finding the Fourth Proportional to 5,878.16, 8,106.54 and 3,890.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,878.16 : 8,106.54 = 3,890.69 : x
2. Step 2: Convert to fraction form
   5,878.16/8,106.54 = 3,890.69/x
3. Step 3: Cross multiply
   5,878.16x = 8,106.54 × 3,890.69
4. Step 4: Simplify right side
   5,878.16x = 31,540,034.11
5. Step 5: Solve for x
   x = 31,540,034.11/5,878.16
6. Step 6: Final answer
   x = 5,365.63