Finding the Fourth Proportional to 5,105.84, 7,704.72 and 4,922.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,105.84 : 7,704.72 = 4,922.78 : x
2. Step 2: Convert to fraction form
   5,105.84/7,704.72 = 4,922.78/x
3. Step 3: Cross multiply
   5,105.84x = 7,704.72 × 4,922.78
4. Step 4: Simplify right side
   5,105.84x = 37,928,641.52
5. Step 5: Solve for x
   x = 37,928,641.52/5,105.84
6. Step 6: Final answer
   x = 7,428.48