Finding the Fourth Proportional to 10,251.45, 14,145.78 and 5,775.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,251.45 : 14,145.78 = 5,775.06 : x
2. Step 2: Convert to fraction form
   10,251.45/14,145.78 = 5,775.06/x
3. Step 3: Cross multiply
   10,251.45x = 14,145.78 × 5,775.06
4. Step 4: Simplify right side
   10,251.45x = 81,692,728.25
5. Step 5: Solve for x
   x = 81,692,728.25/10,251.45
6. Step 6: Final answer
   x = 7,968.89