Finding the Fourth Proportional to 22,370.47, 30,870.72 and 12,161.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,370.47 : 30,870.72 = 12,161.25 : x
2. Step 2: Convert to fraction form
   22,370.47/30,870.72 = 12,161.25/x
3. Step 3: Cross multiply
   22,370.47x = 30,870.72 × 12,161.25
4. Step 4: Simplify right side
   22,370.47x = 375,426,543.60
5. Step 5: Solve for x
   x = 375,426,543.60/22,370.47
6. Step 6: Final answer
   x = 16,782.24