Finding the Fourth Proportional to 10,508.84, 15,758.55 and 3,111.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,508.84 : 15,758.55 = 3,111.92 : x
2. Step 2: Convert to fraction form
   10,508.84/15,758.55 = 3,111.92/x
3. Step 3: Cross multiply
   10,508.84x = 15,758.55 × 3,111.92
4. Step 4: Simplify right side
   10,508.84x = 49,039,327.22
5. Step 5: Solve for x
   x = 49,039,327.22/10,508.84
6. Step 6: Final answer
   x = 4,666.48