Finding the Fourth Proportional to 17,885.43, 26,846.82 and 13,210.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,885.43 : 26,846.82 = 13,210.72 : x
2. Step 2: Convert to fraction form
   17,885.43/26,846.82 = 13,210.72/x
3. Step 3: Cross multiply
   17,885.43x = 26,846.82 × 13,210.72
4. Step 4: Simplify right side
   17,885.43x = 354,665,821.91
5. Step 5: Solve for x
   x = 354,665,821.91/17,885.43
6. Step 6: Final answer
   x = 19,829.87