Finding the Fourth Proportional to 9,123.82, 13,689.82 and 5,619.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.82 : 13,689.82 = 5,619.14 : x
2. Step 2: Convert to fraction form
   9,123.82/13,689.82 = 5,619.14/x
3. Step 3: Cross multiply
   9,123.82x = 13,689.82 × 5,619.14
4. Step 4: Simplify right side
   9,123.82x = 76,925,015.15
5. Step 5: Solve for x
   x = 76,925,015.15/9,123.82
6. Step 6: Final answer
   x = 8,431.23