Finding the Fourth Proportional to 5,133.02, 7,664.89 and 5,078.75

Step by Step Solution

1. Step 1: Write the proportion equation
   5,133.02 : 7,664.89 = 5,078.75 : x
2. Step 2: Convert to fraction form
   5,133.02/7,664.89 = 5,078.75/x
3. Step 3: Cross multiply
   5,133.02x = 7,664.89 × 5,078.75
4. Step 4: Simplify right side
   5,133.02x = 38,928,068.85
5. Step 5: Solve for x
   x = 38,928,068.85/5,133.02
6. Step 6: Final answer
   x = 7,583.85