Finding the Fourth Proportional to 6,428.34, 8,865.72 and 5,099.94

Step by Step Solution

1. Step 1: Write the proportion equation
   6,428.34 : 8,865.72 = 5,099.94 : x
2. Step 2: Convert to fraction form
   6,428.34/8,865.72 = 5,099.94/x
3. Step 3: Cross multiply
   6,428.34x = 8,865.72 × 5,099.94
4. Step 4: Simplify right side
   6,428.34x = 45,214,640.06
5. Step 5: Solve for x
   x = 45,214,640.06/6,428.34
6. Step 6: Final answer
   x = 7,033.64