Finding the Fourth Proportional to 5,101.63, 7,636.54 and 3,928.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,101.63 : 7,636.54 = 3,928.59 : x
2. Step 2: Convert to fraction form
   5,101.63/7,636.54 = 3,928.59/x
3. Step 3: Cross multiply
   5,101.63x = 7,636.54 × 3,928.59
4. Step 4: Simplify right side
   5,101.63x = 30,000,834.68
5. Step 5: Solve for x
   x = 30,000,834.68/5,101.63
6. Step 6: Final answer
   x = 5,880.64