Finding the Fourth Proportional to 19,665.54, 29,487.30 and 6,510.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,665.54 : 29,487.30 = 6,510.72 : x
2. Step 2: Convert to fraction form
   19,665.54/29,487.30 = 6,510.72/x
3. Step 3: Cross multiply
   19,665.54x = 29,487.30 × 6,510.72
4. Step 4: Simplify right side
   19,665.54x = 191,983,553.86
5. Step 5: Solve for x
   x = 191,983,553.86/19,665.54
6. Step 6: Final answer
   x = 9,762.43