Finding the Fourth Proportional to 9,903.38, 13,667.27 and 5,711.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,903.38 : 13,667.27 = 5,711.63 : x
2. Step 2: Convert to fraction form
   9,903.38/13,667.27 = 5,711.63/x
3. Step 3: Cross multiply
   9,903.38x = 13,667.27 × 5,711.63
4. Step 4: Simplify right side
   9,903.38x = 78,062,292.46
5. Step 5: Solve for x
   x = 78,062,292.46/9,903.38
6. Step 6: Final answer
   x = 7,882.39