Finding the Fourth Proportional to 5,381.60, 7,426.69 and 2,959.06

Step by Step Solution

1. Step 1: Write the proportion equation
   5,381.60 : 7,426.69 = 2,959.06 : x
2. Step 2: Convert to fraction form
   5,381.60/7,426.69 = 2,959.06/x
3. Step 3: Cross multiply
   5,381.60x = 7,426.69 × 2,959.06
4. Step 4: Simplify right side
   5,381.60x = 21,976,038.94
5. Step 5: Solve for x
   x = 21,976,038.94/5,381.60
6. Step 6: Final answer
   x = 4,083.55