Finding the Fourth Proportional to 13,019.92, 19,507.20 and 7,814.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,019.92 : 19,507.20 = 7,814.32 : x
2. Step 2: Convert to fraction form
   13,019.92/19,507.20 = 7,814.32/x
3. Step 3: Cross multiply
   13,019.92x = 19,507.20 × 7,814.32
4. Step 4: Simplify right side
   13,019.92x = 152,435,503.10
5. Step 5: Solve for x
   x = 152,435,503.10/13,019.92
6. Step 6: Final answer
   x = 11,707.87