Finding the Fourth Proportional to 12,933.33, 19,361.72 and 7,987.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,933.33 : 19,361.72 = 7,987.07 : x
2. Step 2: Convert to fraction form
   12,933.33/19,361.72 = 7,987.07/x
3. Step 3: Cross multiply
   12,933.33x = 19,361.72 × 7,987.07
4. Step 4: Simplify right side
   12,933.33x = 154,643,316.15
5. Step 5: Solve for x
   x = 154,643,316.15/12,933.33
6. Step 6: Final answer
   x = 11,956.96