Finding the Fourth Proportional to 12,155.40, 18,227.64 and 5,583.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,155.40 : 18,227.64 = 5,583.72 : x
2. Step 2: Convert to fraction form
   12,155.40/18,227.64 = 5,583.72/x
3. Step 3: Cross multiply
   12,155.40x = 18,227.64 × 5,583.72
4. Step 4: Simplify right side
   12,155.40x = 101,778,038.02
5. Step 5: Solve for x
   x = 101,778,038.02/12,155.40
6. Step 6: Final answer
   x = 8,373.07