Finding the Fourth Proportional to 19,861.83, 27,409.23 and 10,909.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,861.83 : 27,409.23 = 10,909.50 : x
2. Step 2: Convert to fraction form
   19,861.83/27,409.23 = 10,909.50/x
3. Step 3: Cross multiply
   19,861.83x = 27,409.23 × 10,909.50
4. Step 4: Simplify right side
   19,861.83x = 299,020,994.69
5. Step 5: Solve for x
   x = 299,020,994.69/19,861.83
6. Step 6: Final answer
   x = 15,055.06