Finding the Fourth Proportional to 11,933.02, 17,902.57 and 8,429.87

Step by Step Solution

1. Step 1: Write the proportion equation
   11,933.02 : 17,902.57 = 8,429.87 : x
2. Step 2: Convert to fraction form
   11,933.02/17,902.57 = 8,429.87/x
3. Step 3: Cross multiply
   11,933.02x = 17,902.57 × 8,429.87
4. Step 4: Simplify right side
   11,933.02x = 150,916,377.25
5. Step 5: Solve for x
   x = 150,916,377.25/11,933.02
6. Step 6: Final answer
   x = 12,646.95