Finding the Fourth Proportional to 11,671.83, 17,507.67 and 5,428.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,671.83 : 17,507.67 = 5,428.38 : x
2. Step 2: Convert to fraction form
   11,671.83/17,507.67 = 5,428.38/x
3. Step 3: Cross multiply
   11,671.83x = 17,507.67 × 5,428.38
4. Step 4: Simplify right side
   11,671.83x = 95,038,285.67
5. Step 5: Solve for x
   x = 95,038,285.67/11,671.83
6. Step 6: Final answer
   x = 8,142.54