Finding the Fourth Proportional to 7,358.82, 10,155.74 and 4,215.07

Step by Step Solution

1. Step 1: Write the proportion equation
   7,358.82 : 10,155.74 = 4,215.07 : x
2. Step 2: Convert to fraction form
   7,358.82/10,155.74 = 4,215.07/x
3. Step 3: Cross multiply
   7,358.82x = 10,155.74 × 4,215.07
4. Step 4: Simplify right side
   7,358.82x = 42,807,155.00
5. Step 5: Solve for x
   x = 42,807,155.00/7,358.82
6. Step 6: Final answer
   x = 5,817.12