Finding the Fourth Proportional to 19,861.50, 27,409.59 and 10,909.83

Step by Step Solution

1. Step 1: Write the proportion equation
   19,861.50 : 27,409.59 = 10,909.83 : x
2. Step 2: Convert to fraction form
   19,861.50/27,409.59 = 10,909.83/x
3. Step 3: Cross multiply
   19,861.50x = 27,409.59 × 10,909.83
4. Step 4: Simplify right side
   19,861.50x = 299,033,967.27
5. Step 5: Solve for x
   x = 299,033,967.27/19,861.50
6. Step 6: Final answer
   x = 15,055.96