Finding the Fourth Proportional to 14,341.72, 21,499.62 and 5,105.56

Step by Step Solution

1. Step 1: Write the proportion equation
   14,341.72 : 21,499.62 = 5,105.56 : x
2. Step 2: Convert to fraction form
   14,341.72/21,499.62 = 5,105.56/x
3. Step 3: Cross multiply
   14,341.72x = 21,499.62 × 5,105.56
4. Step 4: Simplify right side
   14,341.72x = 109,767,599.89
5. Step 5: Solve for x
   x = 109,767,599.89/14,341.72
6. Step 6: Final answer
   x = 7,653.73