Finding the Fourth Proportional to 25,776, 35,570.88 and 14,598.72

Step by Step Solution

1. Step 1: Write the proportion equation
   25,776 : 35,570.88 = 14,598.72 : x
2. Step 2: Convert to fraction form
   25,776/35,570.88 = 14,598.72/x
3. Step 3: Cross multiply
   25,776x = 35,570.88 × 14,598.72
4. Step 4: Simplify right side
   25,776x = 519,289,317.27
5. Step 5: Solve for x
   x = 519,289,317.27/25,776
6. Step 6: Final answer
   x = 20,146.23