Finding the Fourth Proportional to 12,191.96, 16,832.15 and 7,719.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,191.96 : 16,832.15 = 7,719.54 : x
2. Step 2: Convert to fraction form
   12,191.96/16,832.15 = 7,719.54/x
3. Step 3: Cross multiply
   12,191.96x = 16,832.15 × 7,719.54
4. Step 4: Simplify right side
   12,191.96x = 129,936,445.56
5. Step 5: Solve for x
   x = 129,936,445.56/12,191.96
6. Step 6: Final answer
   x = 10,657.56