Finding the Fourth Proportional to 11,397.56, 17,090.86 and 5,388.63

Step by Step Solution

1. Step 1: Write the proportion equation
   11,397.56 : 17,090.86 = 5,388.63 : x
2. Step 2: Convert to fraction form
   11,397.56/17,090.86 = 5,388.63/x
3. Step 3: Cross multiply
   11,397.56x = 17,090.86 × 5,388.63
4. Step 4: Simplify right side
   11,397.56x = 92,096,208.52
5. Step 5: Solve for x
   x = 92,096,208.52/11,397.56
6. Step 6: Final answer
   x = 8,080.35