Finding the Fourth Proportional to 27,158.86, 37,478.89 and 15,222.18

Step by Step Solution

1. Step 1: Write the proportion equation
   27,158.86 : 37,478.89 = 15,222.18 : x
2. Step 2: Convert to fraction form
   27,158.86/37,478.89 = 15,222.18/x
3. Step 3: Cross multiply
   27,158.86x = 37,478.89 × 15,222.18
4. Step 4: Simplify right side
   27,158.86x = 570,510,409.78
5. Step 5: Solve for x
   x = 570,510,409.78/27,158.86
6. Step 6: Final answer
   x = 21,006.42