Finding the Fourth Proportional to 10,004.78, 13,805.70 and 5,754.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,004.78 : 13,805.70 = 5,754.71 : x
2. Step 2: Convert to fraction form
   10,004.78/13,805.70 = 5,754.71/x
3. Step 3: Cross multiply
   10,004.78x = 13,805.70 × 5,754.71
4. Step 4: Simplify right side
   10,004.78x = 79,447,812.78
5. Step 5: Solve for x
   x = 79,447,812.78/10,004.78
6. Step 6: Final answer
   x = 7,940.98