Finding the Fourth Proportional to 22,547.69, 31,115.71 and 12,984.09

Step by Step Solution

1. Step 1: Write the proportion equation
   22,547.69 : 31,115.71 = 12,984.09 : x
2. Step 2: Convert to fraction form
   22,547.69/31,115.71 = 12,984.09/x
3. Step 3: Cross multiply
   22,547.69x = 31,115.71 × 12,984.09
4. Step 4: Simplify right side
   22,547.69x = 404,009,179.05
5. Step 5: Solve for x
   x = 404,009,179.05/22,547.69
6. Step 6: Final answer
   x = 17,917.99