Finding the Fourth Proportional to 11,377.89, 17,053.42 and 5,130.58

Step by Step Solution

1. Step 1: Write the proportion equation
   11,377.89 : 17,053.42 = 5,130.58 : x
2. Step 2: Convert to fraction form
   11,377.89/17,053.42 = 5,130.58/x
3. Step 3: Cross multiply
   11,377.89x = 17,053.42 × 5,130.58
4. Step 4: Simplify right side
   11,377.89x = 87,493,965.39
5. Step 5: Solve for x
   x = 87,493,965.39/11,377.89
6. Step 6: Final answer
   x = 7,689.83