Finding the Fourth Proportional to 12,109.23, 18,110.72 and 10,784.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,109.23 : 18,110.72 = 10,784.37 : x
2. Step 2: Convert to fraction form
   12,109.23/18,110.72 = 10,784.37/x
3. Step 3: Cross multiply
   12,109.23x = 18,110.72 × 10,784.37
4. Step 4: Simplify right side
   12,109.23x = 195,312,705.45
5. Step 5: Solve for x
   x = 195,312,705.45/12,109.23
6. Step 6: Final answer
   x = 16,129.24