Finding the Fourth Proportional to 9,381.87, 12,944.87 and 5,604.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,381.87 : 12,944.87 = 5,604.30 : x
2. Step 2: Convert to fraction form
   9,381.87/12,944.87 = 5,604.30/x
3. Step 3: Cross multiply
   9,381.87x = 12,944.87 × 5,604.30
4. Step 4: Simplify right side
   9,381.87x = 72,546,917.43
5. Step 5: Solve for x
   x = 72,546,917.43/9,381.87
6. Step 6: Final answer
   x = 7,732.67