Finding the Fourth Proportional to 10,867.91, 16,300.64 and 7,380.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,867.91 : 16,300.64 = 7,380.32 : x
2. Step 2: Convert to fraction form
   10,867.91/16,300.64 = 7,380.32/x
3. Step 3: Cross multiply
   10,867.91x = 16,300.64 × 7,380.32
4. Step 4: Simplify right side
   10,867.91x = 120,303,876.35
5. Step 5: Solve for x
   x = 120,303,876.35/10,867.91
6. Step 6: Final answer
   x = 11,069.65