Finding the Fourth Proportional to 25,316.88, 37,978.35 and 10,535.79

Step by Step Solution

1. Step 1: Write the proportion equation
   25,316.88 : 37,978.35 = 10,535.79 : x
2. Step 2: Convert to fraction form
   25,316.88/37,978.35 = 10,535.79/x
3. Step 3: Cross multiply
   25,316.88x = 37,978.35 × 10,535.79
4. Step 4: Simplify right side
   25,316.88x = 400,131,920.15
5. Step 5: Solve for x
   x = 400,131,920.15/25,316.88
6. Step 6: Final answer
   x = 15,804.95