Finding the Fourth Proportional to 22,037.68, 30,412.56 and 12,478.24

Step by Step Solution

1. Step 1: Write the proportion equation
   22,037.68 : 30,412.56 = 12,478.24 : x
2. Step 2: Convert to fraction form
   22,037.68/30,412.56 = 12,478.24/x
3. Step 3: Cross multiply
   22,037.68x = 30,412.56 × 12,478.24
4. Step 4: Simplify right side
   22,037.68x = 379,495,222.69
5. Step 5: Solve for x
   x = 379,495,222.69/22,037.68
6. Step 6: Final answer
   x = 17,220.29