Finding the Fourth Proportional to 9,863.82, 13,612.05 and 5,672.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,863.82 : 13,612.05 = 5,672.07 : x
2. Step 2: Convert to fraction form
   9,863.82/13,612.05 = 5,672.07/x
3. Step 3: Cross multiply
   9,863.82x = 13,612.05 × 5,672.07
4. Step 4: Simplify right side
   9,863.82x = 77,208,500.44
5. Step 5: Solve for x
   x = 77,208,500.44/9,863.82
6. Step 6: Final answer
   x = 7,827.44