Finding the Fourth Proportional to 11,090.71, 16,627.86 and 5,240.49

Step by Step Solution

1. Step 1: Write the proportion equation
   11,090.71 : 16,627.86 = 5,240.49 : x
2. Step 2: Convert to fraction form
   11,090.71/16,627.86 = 5,240.49/x
3. Step 3: Cross multiply
   11,090.71x = 16,627.86 × 5,240.49
4. Step 4: Simplify right side
   11,090.71x = 87,138,091.35
5. Step 5: Solve for x
   x = 87,138,091.35/11,090.71
6. Step 6: Final answer
   x = 7,856.85