Finding the Fourth Proportional to 25,443.25, 35,111.69 and 15,507.25

Step by Step Solution

1. Step 1: Write the proportion equation
   25,443.25 : 35,111.69 = 15,507.25 : x
2. Step 2: Convert to fraction form
   25,443.25/35,111.69 = 15,507.25/x
3. Step 3: Cross multiply
   25,443.25x = 35,111.69 × 15,507.25
4. Step 4: Simplify right side
   25,443.25x = 544,485,754.75
5. Step 5: Solve for x
   x = 544,485,754.75/25,443.25
6. Step 6: Final answer
   x = 21,400.01