Finding the Fourth Proportional to 10,322.06, 15,485.27 and 5,390.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,322.06 : 15,485.27 = 5,390.38 : x
2. Step 2: Convert to fraction form
   10,322.06/15,485.27 = 5,390.38/x
3. Step 3: Cross multiply
   10,322.06x = 15,485.27 × 5,390.38
4. Step 4: Simplify right side
   10,322.06x = 83,471,424.04
5. Step 5: Solve for x
   x = 83,471,424.04/10,322.06
6. Step 6: Final answer
   x = 8,086.70