Finding the Fourth Proportional to 12,722.48, 19,091.20 and 5,326.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,722.48 : 19,091.20 = 5,326.32 : x
2. Step 2: Convert to fraction form
   12,722.48/19,091.20 = 5,326.32/x
3. Step 3: Cross multiply
   12,722.48x = 19,091.20 × 5,326.32
4. Step 4: Simplify right side
   12,722.48x = 101,685,840.38
5. Step 5: Solve for x
   x = 101,685,840.38/12,722.48
6. Step 6: Final answer
   x = 7,992.61