Finding the Fourth Proportional to 11,102.72, 16,662.30 and 5,259.35

Step by Step Solution

1. Step 1: Write the proportion equation
   11,102.72 : 16,662.30 = 5,259.35 : x
2. Step 2: Convert to fraction form
   11,102.72/16,662.30 = 5,259.35/x
3. Step 3: Cross multiply
   11,102.72x = 16,662.30 × 5,259.35
4. Step 4: Simplify right side
   11,102.72x = 87,632,784.19
5. Step 5: Solve for x
   x = 87,632,784.19/11,102.72
6. Step 6: Final answer
   x = 7,892.91