Finding the Fourth Proportional to 5,858.19, 8,086.65 and 3,499.89

Step by Step Solution

1. Step 1: Write the proportion equation
   5,858.19 : 8,086.65 = 3,499.89 : x
2. Step 2: Convert to fraction form
   5,858.19/8,086.65 = 3,499.89/x
3. Step 3: Cross multiply
   5,858.19x = 8,086.65 × 3,499.89
4. Step 4: Simplify right side
   5,858.19x = 28,302,385.47
5. Step 5: Solve for x
   x = 28,302,385.47/5,858.19
6. Step 6: Final answer
   x = 4,831.25