Finding the Fourth Proportional to 12,377.98, 17,088.25 and 9,559.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,377.98 : 17,088.25 = 9,559.94 : x
2. Step 2: Convert to fraction form
   12,377.98/17,088.25 = 9,559.94/x
3. Step 3: Cross multiply
   12,377.98x = 17,088.25 × 9,559.94
4. Step 4: Simplify right side
   12,377.98x = 163,362,511.46
5. Step 5: Solve for x
   x = 163,362,511.46/12,377.98
6. Step 6: Final answer
   x = 13,197.84