Finding the Fourth Proportional to 13,164.77, 18,167.42 and 7,859.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,164.77 : 18,167.42 = 7,859.48 : x
2. Step 2: Convert to fraction form
   13,164.77/18,167.42 = 7,859.48/x
3. Step 3: Cross multiply
   13,164.77x = 18,167.42 × 7,859.48
4. Step 4: Simplify right side
   13,164.77x = 142,786,402.95
5. Step 5: Solve for x
   x = 142,786,402.95/13,164.77
6. Step 6: Final answer
   x = 10,846.10