Finding the Fourth Proportional to 12,162.90, 18,238.27 and 5,583.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,162.90 : 18,238.27 = 5,583.47 : x
2. Step 2: Convert to fraction form
   12,162.90/18,238.27 = 5,583.47/x
3. Step 3: Cross multiply
   12,162.90x = 18,238.27 × 5,583.47
4. Step 4: Simplify right side
   12,162.90x = 101,832,865.03
5. Step 5: Solve for x
   x = 101,832,865.03/12,162.90
6. Step 6: Final answer
   x = 8,372.42