Finding the Fourth Proportional to 16,780.48, 23,155.20 and 10,066.39

Step by Step Solution

1. Step 1: Write the proportion equation
   16,780.48 : 23,155.20 = 10,066.39 : x
2. Step 2: Convert to fraction form
   16,780.48/23,155.20 = 10,066.39/x
3. Step 3: Cross multiply
   16,780.48x = 23,155.20 × 10,066.39
4. Step 4: Simplify right side
   16,780.48x = 233,089,215.84
5. Step 5: Solve for x
   x = 233,089,215.84/16,780.48
6. Step 6: Final answer
   x = 13,890.50