Finding the Fourth Proportional to 7,557.67, 10,429.72 and 4,200.79

Step by Step Solution

1. Step 1: Write the proportion equation
   7,557.67 : 10,429.72 = 4,200.79 : x
2. Step 2: Convert to fraction form
   7,557.67/10,429.72 = 4,200.79/x
3. Step 3: Cross multiply
   7,557.67x = 10,429.72 × 4,200.79
4. Step 4: Simplify right side
   7,557.67x = 43,813,063.48
5. Step 5: Solve for x
   x = 43,813,063.48/7,557.67
6. Step 6: Final answer
   x = 5,797.17