Finding the Fourth Proportional to 13,125.69, 19,677.47 and 5,724.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,125.69 : 19,677.47 = 5,724.72 : x
2. Step 2: Convert to fraction form
   13,125.69/19,677.47 = 5,724.72/x
3. Step 3: Cross multiply
   13,125.69x = 19,677.47 × 5,724.72
4. Step 4: Simplify right side
   13,125.69x = 112,647,977.43
5. Step 5: Solve for x
   x = 112,647,977.43/13,125.69
6. Step 6: Final answer
   x = 8,582.25