Finding the Fourth Proportional to 9,123.84, 13,690.62 and 3,928.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.84 : 13,690.62 = 3,928.50 : x
2. Step 2: Convert to fraction form
   9,123.84/13,690.62 = 3,928.50/x
3. Step 3: Cross multiply
   9,123.84x = 13,690.62 × 3,928.50
4. Step 4: Simplify right side
   9,123.84x = 53,783,600.67
5. Step 5: Solve for x
   x = 53,783,600.67/9,123.84
6. Step 6: Final answer
   x = 5,894.84