Finding the Fourth Proportional to 22,618.88, 31,213.83 and 12,547.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,618.88 : 31,213.83 = 12,547.34 : x
2. Step 2: Convert to fraction form
   22,618.88/31,213.83 = 12,547.34/x
3. Step 3: Cross multiply
   22,618.88x = 31,213.83 × 12,547.34
4. Step 4: Simplify right side
   22,618.88x = 391,650,381.64
5. Step 5: Solve for x
   x = 391,650,381.64/22,618.88
6. Step 6: Final answer
   x = 17,315.20