Finding the Fourth Proportional to 7,359.84, 10,155.42 and 4,215.42

Step by Step Solution

1. Step 1: Write the proportion equation
   7,359.84 : 10,155.42 = 4,215.42 : x
2. Step 2: Convert to fraction form
   7,359.84/10,155.42 = 4,215.42/x
3. Step 3: Cross multiply
   7,359.84x = 10,155.42 × 4,215.42
4. Step 4: Simplify right side
   7,359.84x = 42,809,360.58
5. Step 5: Solve for x
   x = 42,809,360.58/7,359.84
6. Step 6: Final answer
   x = 5,816.62