Finding the Fourth Proportional to 11,638.47, 17,451.81 and 5,393.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,638.47 : 17,451.81 = 5,393.10 : x
2. Step 2: Convert to fraction form
   11,638.47/17,451.81 = 5,393.10/x
3. Step 3: Cross multiply
   11,638.47x = 17,451.81 × 5,393.10
4. Step 4: Simplify right side
   11,638.47x = 94,119,356.51
5. Step 5: Solve for x
   x = 94,119,356.51/11,638.47
6. Step 6: Final answer
   x = 8,086.92