Finding the Fourth Proportional to 3,886.90, 5,820.18 and 3,566.14

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886.90 : 5,820.18 = 3,566.14 : x
2. Step 2: Convert to fraction form
   3,886.90/5,820.18 = 3,566.14/x
3. Step 3: Cross multiply
   3,886.90x = 5,820.18 × 3,566.14
4. Step 4: Simplify right side
   3,886.90x = 20,755,576.71
5. Step 5: Solve for x
   x = 20,755,576.71/3,886.90
6. Step 6: Final answer
   x = 5,339.88