Finding the Fourth Proportional to 25,676.72, 35,423.32 and 15,603.56

Step by Step Solution

1. Step 1: Write the proportion equation
   25,676.72 : 35,423.32 = 15,603.56 : x
2. Step 2: Convert to fraction form
   25,676.72/35,423.32 = 15,603.56/x
3. Step 3: Cross multiply
   25,676.72x = 35,423.32 × 15,603.56
4. Step 4: Simplify right side
   25,676.72x = 552,729,899.02
5. Step 5: Solve for x
   x = 552,729,899.02/25,676.72
6. Step 6: Final answer
   x = 21,526.50