Finding the Fourth Proportional to 10,864.52, 16,199.47 and 10,667.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,864.52 : 16,199.47 = 10,667.69 : x
2. Step 2: Convert to fraction form
   10,864.52/16,199.47 = 10,667.69/x
3. Step 3: Cross multiply
   10,864.52x = 16,199.47 × 10,667.69
4. Step 4: Simplify right side
   10,864.52x = 172,810,924.12
5. Step 5: Solve for x
   x = 172,810,924.12/10,864.52
6. Step 6: Final answer
   x = 15,905.99