Finding the Fourth Proportional to 11,387.77, 17,076.62 and 5,147.53

Step by Step Solution

1. Step 1: Write the proportion equation
   11,387.77 : 17,076.62 = 5,147.53 : x
2. Step 2: Convert to fraction form
   11,387.77/17,076.62 = 5,147.53/x
3. Step 3: Cross multiply
   11,387.77x = 17,076.62 × 5,147.53
4. Step 4: Simplify right side
   11,387.77x = 87,902,345.32
5. Step 5: Solve for x
   x = 87,902,345.32/11,387.77
6. Step 6: Final answer
   x = 7,719.01