Finding the Fourth Proportional to 17,721.63, 26,546.00 and 12,801.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,721.63 : 26,546.00 = 12,801.15 : x
2. Step 2: Convert to fraction form
   17,721.63/26,546.00 = 12,801.15/x
3. Step 3: Cross multiply
   17,721.63x = 26,546.00 × 12,801.15
4. Step 4: Simplify right side
   17,721.63x = 339,819,263.89
5. Step 5: Solve for x
   x = 339,819,263.89/17,721.63
6. Step 6: Final answer
   x = 19,175.40