Finding the Fourth Proportional to 10,891.50, 15,030.39 and 5,923.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,891.50 : 15,030.39 = 5,923.50 : x
2. Step 2: Convert to fraction form
   10,891.50/15,030.39 = 5,923.50/x
3. Step 3: Cross multiply
   10,891.50x = 15,030.39 × 5,923.50
4. Step 4: Simplify right side
   10,891.50x = 89,032,515.17
5. Step 5: Solve for x
   x = 89,032,515.17/10,891.50
6. Step 6: Final answer
   x = 8,174.50