Finding the Fourth Proportional to 6,824.03, 10,242.89 and 3,128.91

Step by Step Solution

1. Step 1: Write the proportion equation
   6,824.03 : 10,242.89 = 3,128.91 : x
2. Step 2: Convert to fraction form
   6,824.03/10,242.89 = 3,128.91/x
3. Step 3: Cross multiply
   6,824.03x = 10,242.89 × 3,128.91
4. Step 4: Simplify right side
   6,824.03x = 32,049,065.31
5. Step 5: Solve for x
   x = 32,049,065.31/6,824.03
6. Step 6: Final answer
   x = 4,696.50