Finding the Fourth Proportional to 16,667.06, 22,999.60 and 9,111.99

Step by Step Solution

1. Step 1: Write the proportion equation
   16,667.06 : 22,999.60 = 9,111.99 : x
2. Step 2: Convert to fraction form
   16,667.06/22,999.60 = 9,111.99/x
3. Step 3: Cross multiply
   16,667.06x = 22,999.60 × 9,111.99
4. Step 4: Simplify right side
   16,667.06x = 209,572,102.42
5. Step 5: Solve for x
   x = 209,572,102.42/16,667.06
6. Step 6: Final answer
   x = 12,574.03