Finding the Fourth Proportional to 7,315.84, 10,093.35 and 4,128.76

Step by Step Solution

1. Step 1: Write the proportion equation
   7,315.84 : 10,093.35 = 4,128.76 : x
2. Step 2: Convert to fraction form
   7,315.84/10,093.35 = 4,128.76/x
3. Step 3: Cross multiply
   7,315.84x = 10,093.35 × 4,128.76
4. Step 4: Simplify right side
   7,315.84x = 41,673,019.75
5. Step 5: Solve for x
   x = 41,673,019.75/7,315.84
6. Step 6: Final answer
   x = 5,696.27