Finding the Fourth Proportional to 22,146, 30,561.48 and 12,210

Step by Step Solution

1. Step 1: Write the proportion equation
   22,146 : 30,561.48 = 12,210 : x
2. Step 2: Convert to fraction form
   22,146/30,561.48 = 12,210/x
3. Step 3: Cross multiply
   22,146x = 30,561.48 × 12,210
4. Step 4: Simplify right side
   22,146x = 373,155,670.80
5. Step 5: Solve for x
   x = 373,155,670.80/22,146
6. Step 6: Final answer
   x = 16,849.80