Finding the Fourth Proportional to 25,760.84, 35,547 and 14,428.76

Step by Step Solution

1. Step 1: Write the proportion equation
   25,760.84 : 35,547 = 14,428.76 : x
2. Step 2: Convert to fraction form
   25,760.84/35,547 = 14,428.76/x
3. Step 3: Cross multiply
   25,760.84x = 35,547 × 14,428.76
4. Step 4: Simplify right side
   25,760.84x = 512,899,131.72
5. Step 5: Solve for x
   x = 512,899,131.72/25,760.84
6. Step 6: Final answer
   x = 19,910.03