Finding the Fourth Proportional to 11,839.61, 16,336.37 and 7,124.19

Step by Step Solution

1. Step 1: Write the proportion equation
   11,839.61 : 16,336.37 = 7,124.19 : x
2. Step 2: Convert to fraction form
   11,839.61/16,336.37 = 7,124.19/x
3. Step 3: Cross multiply
   11,839.61x = 16,336.37 × 7,124.19
4. Step 4: Simplify right side
   11,839.61x = 116,383,368.17
5. Step 5: Solve for x
   x = 116,383,368.17/11,839.61
6. Step 6: Final answer
   x = 9,830.00