Finding the Fourth Proportional to 9,678.95, 13,356.56 and 5,700.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,678.95 : 13,356.56 = 5,700.23 : x
2. Step 2: Convert to fraction form
   9,678.95/13,356.56 = 5,700.23/x
3. Step 3: Cross multiply
   9,678.95x = 13,356.56 × 5,700.23
4. Step 4: Simplify right side
   9,678.95x = 76,135,464.01
5. Step 5: Solve for x
   x = 76,135,464.01/9,678.95
6. Step 6: Final answer
   x = 7,866.09