Finding the Fourth Proportional to 5,354.59, 7,389.07 and 2,931.89

Step by Step Solution

1. Step 1: Write the proportion equation
   5,354.59 : 7,389.07 = 2,931.89 : x
2. Step 2: Convert to fraction form
   5,354.59/7,389.07 = 2,931.89/x
3. Step 3: Cross multiply
   5,354.59x = 7,389.07 × 2,931.89
4. Step 4: Simplify right side
   5,354.59x = 21,663,951.59
5. Step 5: Solve for x
   x = 21,663,951.59/5,354.59
6. Step 6: Final answer
   x = 4,045.86