Finding the Fourth Proportional to 11,100.47, 16,658.93 and 5,257.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,100.47 : 16,658.93 = 5,257.10 : x
2. Step 2: Convert to fraction form
   11,100.47/16,658.93 = 5,257.10/x
3. Step 3: Cross multiply
   11,100.47x = 16,658.93 × 5,257.10
4. Step 4: Simplify right side
   11,100.47x = 87,577,551.32
5. Step 5: Solve for x
   x = 87,577,551.32/11,100.47
6. Step 6: Final answer
   x = 7,889.53