Finding the Fourth Proportional to 19,663.50, 29,468.98 and 7,171.79

Step by Step Solution

1. Step 1: Write the proportion equation
   19,663.50 : 29,468.98 = 7,171.79 : x
2. Step 2: Convert to fraction form
   19,663.50/29,468.98 = 7,171.79/x
3. Step 3: Cross multiply
   19,663.50x = 29,468.98 × 7,171.79
4. Step 4: Simplify right side
   19,663.50x = 211,345,300.22
5. Step 5: Solve for x
   x = 211,345,300.22/19,663.50
6. Step 6: Final answer
   x = 10,748.10