Finding the Fourth Proportional to 16,139.63, 22,272.69 and 9,066.06

Step by Step Solution

1. Step 1: Write the proportion equation
   16,139.63 : 22,272.69 = 9,066.06 : x
2. Step 2: Convert to fraction form
   16,139.63/22,272.69 = 9,066.06/x
3. Step 3: Cross multiply
   16,139.63x = 22,272.69 × 9,066.06
4. Step 4: Simplify right side
   16,139.63x = 201,925,543.90
5. Step 5: Solve for x
   x = 201,925,543.90/16,139.63
6. Step 6: Final answer
   x = 12,511.17