Finding the Fourth Proportional to 11,877.32, 17,807.33 and 7,721.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,877.32 : 17,807.33 = 7,721.48 : x
2. Step 2: Convert to fraction form
   11,877.32/17,807.33 = 7,721.48/x
3. Step 3: Cross multiply
   11,877.32x = 17,807.33 × 7,721.48
4. Step 4: Simplify right side
   11,877.32x = 137,498,814.80
5. Step 5: Solve for x
   x = 137,498,814.80/11,877.32
6. Step 6: Final answer
   x = 11,576.59