Finding the Fourth Proportional to 17,938.55, 26,897.69 and 8,580.83

Step by Step Solution

1. Step 1: Write the proportion equation
   17,938.55 : 26,897.69 = 8,580.83 : x
2. Step 2: Convert to fraction form
   17,938.55/26,897.69 = 8,580.83/x
3. Step 3: Cross multiply
   17,938.55x = 26,897.69 × 8,580.83
4. Step 4: Simplify right side
   17,938.55x = 230,804,327.89
5. Step 5: Solve for x
   x = 230,804,327.89/17,938.55
6. Step 6: Final answer
   x = 12,866.39