Finding the Fourth Proportional to 10,859.50, 14,986.11 and 5,891.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,859.50 : 14,986.11 = 5,891.50 : x
2. Step 2: Convert to fraction form
   10,859.50/14,986.11 = 5,891.50/x
3. Step 3: Cross multiply
   10,859.50x = 14,986.11 × 5,891.50
4. Step 4: Simplify right side
   10,859.50x = 88,290,667.07
5. Step 5: Solve for x
   x = 88,290,667.07/10,859.50
6. Step 6: Final answer
   x = 8,130.27