Finding the Fourth Proportional to 12,159.18, 16,780.01 and 7,380

Step by Step Solution

1. Step 1: Write the proportion equation
   12,159.18 : 16,780.01 = 7,380 : x
2. Step 2: Convert to fraction form
   12,159.18/16,780.01 = 7,380/x
3. Step 3: Cross multiply
   12,159.18x = 16,780.01 × 7,380
4. Step 4: Simplify right side
   12,159.18x = 123,836,436.90
5. Step 5: Solve for x
   x = 123,836,436.90/12,159.18
6. Step 6: Final answer
   x = 10,184.60