Finding the Fourth Proportional to 11,100.81, 16,651.49 and 5,258.01

Step by Step Solution

1. Step 1: Write the proportion equation
   11,100.81 : 16,651.49 = 5,258.01 : x
2. Step 2: Convert to fraction form
   11,100.81/16,651.49 = 5,258.01/x
3. Step 3: Cross multiply
   11,100.81x = 16,651.49 × 5,258.01
4. Step 4: Simplify right side
   11,100.81x = 87,553,674.64
5. Step 5: Solve for x
   x = 87,553,674.64/11,100.81
6. Step 6: Final answer
   x = 7,887.14