Finding the Fourth Proportional to 11,061.72, 16,590.78 and 4,487.64

Step by Step Solution

1. Step 1: Write the proportion equation
   11,061.72 : 16,590.78 = 4,487.64 : x
2. Step 2: Convert to fraction form
   11,061.72/16,590.78 = 4,487.64/x
3. Step 3: Cross multiply
   11,061.72x = 16,590.78 × 4,487.64
4. Step 4: Simplify right side
   11,061.72x = 74,453,447.96
5. Step 5: Solve for x
   x = 74,453,447.96/11,061.72
6. Step 6: Final answer
   x = 6,730.73