Finding the Fourth Proportional to 13,832.16, 19,089.99 and 7,864.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,832.16 : 19,089.99 = 7,864.72 : x
2. Step 2: Convert to fraction form
   13,832.16/19,089.99 = 7,864.72/x
3. Step 3: Cross multiply
   13,832.16x = 19,089.99 × 7,864.72
4. Step 4: Simplify right side
   13,832.16x = 150,137,426.15
5. Step 5: Solve for x
   x = 150,137,426.15/13,832.16
6. Step 6: Final answer
   x = 10,854.23