Finding the Fourth Proportional to 25,839.74, 35,662.71 and 15,774.01

Step by Step Solution

1. Step 1: Write the proportion equation
   25,839.74 : 35,662.71 = 15,774.01 : x
2. Step 2: Convert to fraction form
   25,839.74/35,662.71 = 15,774.01/x
3. Step 3: Cross multiply
   25,839.74x = 35,662.71 × 15,774.01
4. Step 4: Simplify right side
   25,839.74x = 562,543,931.52
5. Step 5: Solve for x
   x = 562,543,931.52/25,839.74
6. Step 6: Final answer
   x = 21,770.50