Finding the Fourth Proportional to 5,783.89, 7,981.77 and 3,426.19

Step by Step Solution

1. Step 1: Write the proportion equation
   5,783.89 : 7,981.77 = 3,426.19 : x
2. Step 2: Convert to fraction form
   5,783.89/7,981.77 = 3,426.19/x
3. Step 3: Cross multiply
   5,783.89x = 7,981.77 × 3,426.19
4. Step 4: Simplify right side
   5,783.89x = 27,347,060.56
5. Step 5: Solve for x
   x = 27,347,060.56/5,783.89
6. Step 6: Final answer
   x = 4,728.14