Finding the Fourth Proportional to 10,970.86, 15,139.75 and 5,935.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,970.86 : 15,139.75 = 5,935.09 : x
2. Step 2: Convert to fraction form
   10,970.86/15,139.75 = 5,935.09/x
3. Step 3: Cross multiply
   10,970.86x = 15,139.75 × 5,935.09
4. Step 4: Simplify right side
   10,970.86x = 89,855,778.83
5. Step 5: Solve for x
   x = 89,855,778.83/10,970.86
6. Step 6: Final answer
   x = 8,190.40