Finding the Fourth Proportional to 4,931.47, 7,389.55 and 2,429.79

Step by Step Solution

1. Step 1: Write the proportion equation
   4,931.47 : 7,389.55 = 2,429.79 : x
2. Step 2: Convert to fraction form
   4,931.47/7,389.55 = 2,429.79/x
3. Step 3: Cross multiply
   4,931.47x = 7,389.55 × 2,429.79
4. Step 4: Simplify right side
   4,931.47x = 17,955,054.69
5. Step 5: Solve for x
   x = 17,955,054.69/4,931.47
6. Step 6: Final answer
   x = 3,640.91