Finding the Fourth Proportional to 11,872.47, 16,377.16 and 7,557.58

Step by Step Solution

1. Step 1: Write the proportion equation
   11,872.47 : 16,377.16 = 7,557.58 : x
2. Step 2: Convert to fraction form
   11,872.47/16,377.16 = 7,557.58/x
3. Step 3: Cross multiply
   11,872.47x = 16,377.16 × 7,557.58
4. Step 4: Simplify right side
   11,872.47x = 123,771,655.93
5. Step 5: Solve for x
   x = 123,771,655.93/11,872.47
6. Step 6: Final answer
   x = 10,425.10