Finding the Fourth Proportional to 13,833.88, 19,089.98 and 7,864.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,833.88 : 19,089.98 = 7,864.72 : x
2. Step 2: Convert to fraction form
   13,833.88/19,089.98 = 7,864.72/x
3. Step 3: Cross multiply
   13,833.88x = 19,089.98 × 7,864.72
4. Step 4: Simplify right side
   13,833.88x = 150,137,347.51
5. Step 5: Solve for x
   x = 150,137,347.51/13,833.88
6. Step 6: Final answer
   x = 10,852.87