Finding the Fourth Proportional to 10,446.72, 15,666.72 and 5,513.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,446.72 : 15,666.72 = 5,513.52 : x
2. Step 2: Convert to fraction form
   10,446.72/15,666.72 = 5,513.52/x
3. Step 3: Cross multiply
   10,446.72x = 15,666.72 × 5,513.52
4. Step 4: Simplify right side
   10,446.72x = 86,378,774.05
5. Step 5: Solve for x
   x = 86,378,774.05/10,446.72
6. Step 6: Final answer
   x = 8,268.51