Finding the Fourth Proportional to 11,858.80, 16,362.32 and 7,380.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,858.80 : 16,362.32 = 7,380.15 : x
2. Step 2: Convert to fraction form
   11,858.80/16,362.32 = 7,380.15/x
3. Step 3: Cross multiply
   11,858.80x = 16,362.32 × 7,380.15
4. Step 4: Simplify right side
   11,858.80x = 120,756,339.05
5. Step 5: Solve for x
   x = 120,756,339.05/11,858.80
6. Step 6: Final answer
   x = 10,182.85