Finding the Fourth Proportional to 10,993.61, 16,430.05 and 8,038.27

Step by Step Solution

1. Step 1: Write the proportion equation
   10,993.61 : 16,430.05 = 8,038.27 : x
2. Step 2: Convert to fraction form
   10,993.61/16,430.05 = 8,038.27/x
3. Step 3: Cross multiply
   10,993.61x = 16,430.05 × 8,038.27
4. Step 4: Simplify right side
   10,993.61x = 132,069,178.01
5. Step 5: Solve for x
   x = 132,069,178.01/10,993.61
6. Step 6: Final answer
   x = 12,013.27