Finding the Fourth Proportional to 12,483.72, 18,718.56 and 5,462.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,483.72 : 18,718.56 = 5,462.64 : x
2. Step 2: Convert to fraction form
   12,483.72/18,718.56 = 5,462.64/x
3. Step 3: Cross multiply
   12,483.72x = 18,718.56 × 5,462.64
4. Step 4: Simplify right side
   12,483.72x = 102,252,754.60
5. Step 5: Solve for x
   x = 102,252,754.60/12,483.72
6. Step 6: Final answer
   x = 8,190.89