Finding the Fourth Proportional to 10,451.36, 15,667.32 and 3,521

Step by Step Solution

1. Step 1: Write the proportion equation
   10,451.36 : 15,667.32 = 3,521 : x
2. Step 2: Convert to fraction form
   10,451.36/15,667.32 = 3,521/x
3. Step 3: Cross multiply
   10,451.36x = 15,667.32 × 3,521
4. Step 4: Simplify right side
   10,451.36x = 55,164,633.72
5. Step 5: Solve for x
   x = 55,164,633.72/10,451.36
6. Step 6: Final answer
   x = 5,278.23