Finding the Fourth Proportional to 27,300.15, 37,672.61 and 15,362.78

Step by Step Solution

1. Step 1: Write the proportion equation
   27,300.15 : 37,672.61 = 15,362.78 : x
2. Step 2: Convert to fraction form
   27,300.15/37,672.61 = 15,362.78/x
3. Step 3: Cross multiply
   27,300.15x = 37,672.61 × 15,362.78
4. Step 4: Simplify right side
   27,300.15x = 578,755,754.28
5. Step 5: Solve for x
   x = 578,755,754.28/27,300.15
6. Step 6: Final answer
   x = 21,199.73