Finding the Fourth Proportional to 11,002.72, 15,177.62 and 7,226.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,002.72 : 15,177.62 = 7,226.50 : x
2. Step 2: Convert to fraction form
   11,002.72/15,177.62 = 7,226.50/x
3. Step 3: Cross multiply
   11,002.72x = 15,177.62 × 7,226.50
4. Step 4: Simplify right side
   11,002.72x = 109,681,070.93
5. Step 5: Solve for x
   x = 109,681,070.93/11,002.72
6. Step 6: Final answer
   x = 9,968.54