Finding the Fourth Proportional to 15,433.56, 21,298.28 and 8,360.10

Step by Step Solution

1. Step 1: Write the proportion equation
   15,433.56 : 21,298.28 = 8,360.10 : x
2. Step 2: Convert to fraction form
   15,433.56/21,298.28 = 8,360.10/x
3. Step 3: Cross multiply
   15,433.56x = 21,298.28 × 8,360.10
4. Step 4: Simplify right side
   15,433.56x = 178,055,708.83
5. Step 5: Solve for x
   x = 178,055,708.83/15,433.56
6. Step 6: Final answer
   x = 11,536.92