Finding the Fourth Proportional to 14,191.83, 19,581.75 and 8,223.15

Step by Step Solution

1. Step 1: Write the proportion equation
   14,191.83 : 19,581.75 = 8,223.15 : x
2. Step 2: Convert to fraction form
   14,191.83/19,581.75 = 8,223.15/x
3. Step 3: Cross multiply
   14,191.83x = 19,581.75 × 8,223.15
4. Step 4: Simplify right side
   14,191.83x = 161,023,667.51
5. Step 5: Solve for x
   x = 161,023,667.51/14,191.83
6. Step 6: Final answer
   x = 11,346.22