Finding the Fourth Proportional to 22,547.96, 31,118.52 and 12,988.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,547.96 : 31,118.52 = 12,988.18 : x
2. Step 2: Convert to fraction form
   22,547.96/31,118.52 = 12,988.18/x
3. Step 3: Cross multiply
   22,547.96x = 31,118.52 × 12,988.18
4. Step 4: Simplify right side
   22,547.96x = 404,172,939.09
5. Step 5: Solve for x
   x = 404,172,939.09/22,547.96
6. Step 6: Final answer
   x = 17,925.03