Finding the Fourth Proportional to 12,145.04, 18,222.15 and 4,754.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,145.04 : 18,222.15 = 4,754.78 : x
2. Step 2: Convert to fraction form
   12,145.04/18,222.15 = 4,754.78/x
3. Step 3: Cross multiply
   12,145.04x = 18,222.15 × 4,754.78
4. Step 4: Simplify right side
   12,145.04x = 86,642,314.38
5. Step 5: Solve for x
   x = 86,642,314.38/12,145.04
6. Step 6: Final answer
   x = 7,133.97