Finding the Fourth Proportional to 11,429.29, 15,769.47 and 7,181.02

Step by Step Solution

1. Step 1: Write the proportion equation
   11,429.29 : 15,769.47 = 7,181.02 : x
2. Step 2: Convert to fraction form
   11,429.29/15,769.47 = 7,181.02/x
3. Step 3: Cross multiply
   11,429.29x = 15,769.47 × 7,181.02
4. Step 4: Simplify right side
   11,429.29x = 113,240,879.46
5. Step 5: Solve for x
   x = 113,240,879.46/11,429.29
6. Step 6: Final answer
   x = 9,907.95