Finding the Fourth Proportional to 10,855.50, 14,993.55 and 7,312.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,855.50 : 14,993.55 = 7,312.56 : x
2. Step 2: Convert to fraction form
   10,855.50/14,993.55 = 7,312.56/x
3. Step 3: Cross multiply
   10,855.50x = 14,993.55 × 7,312.56
4. Step 4: Simplify right side
   10,855.50x = 109,641,233.99
5. Step 5: Solve for x
   x = 109,641,233.99/10,855.50
6. Step 6: Final answer
   x = 10,100.06