Finding the Fourth Proportional to 7,190.64, 10,789.47 and 5,124.06

Step by Step Solution

1. Step 1: Write the proportion equation
   7,190.64 : 10,789.47 = 5,124.06 : x
2. Step 2: Convert to fraction form
   7,190.64/10,789.47 = 5,124.06/x
3. Step 3: Cross multiply
   7,190.64x = 10,789.47 × 5,124.06
4. Step 4: Simplify right side
   7,190.64x = 55,285,891.65
5. Step 5: Solve for x
   x = 55,285,891.65/7,190.64
6. Step 6: Final answer
   x = 7,688.59