Finding the Fourth Proportional to 4,667.31, 7,003.20 and 2,911.86

Step by Step Solution

1. Step 1: Write the proportion equation
   4,667.31 : 7,003.20 = 2,911.86 : x
2. Step 2: Convert to fraction form
   4,667.31/7,003.20 = 2,911.86/x
3. Step 3: Cross multiply
   4,667.31x = 7,003.20 × 2,911.86
4. Step 4: Simplify right side
   4,667.31x = 20,392,337.95
5. Step 5: Solve for x
   x = 20,392,337.95/4,667.31
6. Step 6: Final answer
   x = 4,369.18