Finding the Fourth Proportional to 13,039.82, 19,565.22 and 5,640.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,039.82 : 19,565.22 = 5,640.50 : x
2. Step 2: Convert to fraction form
   13,039.82/19,565.22 = 5,640.50/x
3. Step 3: Cross multiply
   13,039.82x = 19,565.22 × 5,640.50
4. Step 4: Simplify right side
   13,039.82x = 110,357,623.41
5. Step 5: Solve for x
   x = 110,357,623.41/13,039.82
6. Step 6: Final answer
   x = 8,463.12