Finding the Fourth Proportional to 25,978.88, 35,851.20 and 15,368.24

Step by Step Solution

1. Step 1: Write the proportion equation
   25,978.88 : 35,851.20 = 15,368.24 : x
2. Step 2: Convert to fraction form
   25,978.88/35,851.20 = 15,368.24/x
3. Step 3: Cross multiply
   25,978.88x = 35,851.20 × 15,368.24
4. Step 4: Simplify right side
   25,978.88x = 550,969,845.89
5. Step 5: Solve for x
   x = 550,969,845.89/25,978.88
6. Step 6: Final answer
   x = 21,208.38