Finding the Fourth Proportional to 12,377.88, 17,068.46 and 9,360.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,377.88 : 17,068.46 = 9,360.09 : x
2. Step 2: Convert to fraction form
   12,377.88/17,068.46 = 9,360.09/x
3. Step 3: Cross multiply
   12,377.88x = 17,068.46 × 9,360.09
4. Step 4: Simplify right side
   12,377.88x = 159,762,274.96
5. Step 5: Solve for x
   x = 159,762,274.96/12,377.88
6. Step 6: Final answer
   x = 12,907.08