Finding the Fourth Proportional to 8,574.72, 11,830.90 and 5,388.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,574.72 : 11,830.90 = 5,388.52 : x
2. Step 2: Convert to fraction form
   8,574.72/11,830.90 = 5,388.52/x
3. Step 3: Cross multiply
   8,574.72x = 11,830.90 × 5,388.52
4. Step 4: Simplify right side
   8,574.72x = 63,751,041.27
5. Step 5: Solve for x
   x = 63,751,041.27/8,574.72
6. Step 6: Final answer
   x = 7,434.77