Finding the Fourth Proportional to 4,667.29, 6,440.31 and 2,778.98

Step by Step Solution

1. Step 1: Write the proportion equation
   4,667.29 : 6,440.31 = 2,778.98 : x
2. Step 2: Convert to fraction form
   4,667.29/6,440.31 = 2,778.98/x
3. Step 3: Cross multiply
   4,667.29x = 6,440.31 × 2,778.98
4. Step 4: Simplify right side
   4,667.29x = 17,897,460.48
5. Step 5: Solve for x
   x = 17,897,460.48/4,667.29
6. Step 6: Final answer
   x = 3,834.66