Finding the Fourth Proportional to 12,100.30, 18,150.42 and 3,216.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,100.30 : 18,150.42 = 3,216.53 : x
2. Step 2: Convert to fraction form
   12,100.30/18,150.42 = 3,216.53/x
3. Step 3: Cross multiply
   12,100.30x = 18,150.42 × 3,216.53
4. Step 4: Simplify right side
   12,100.30x = 58,381,307.69
5. Step 5: Solve for x
   x = 58,381,307.69/12,100.30
6. Step 6: Final answer
   x = 4,824.78