Finding the Fourth Proportional to 19,633.19, 29,451.60 and 7,947.32

Step by Step Solution

1. Step 1: Write the proportion equation
   19,633.19 : 29,451.60 = 7,947.32 : x
2. Step 2: Convert to fraction form
   19,633.19/29,451.60 = 7,947.32/x
3. Step 3: Cross multiply
   19,633.19x = 29,451.60 × 7,947.32
4. Step 4: Simplify right side
   19,633.19x = 234,061,142.45
5. Step 5: Solve for x
   x = 234,061,142.45/19,633.19
6. Step 6: Final answer
   x = 11,921.71