Finding the Fourth Proportional to 11,192.96, 16,782.72 and 5,271.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,192.96 : 16,782.72 = 5,271.20 : x
2. Step 2: Convert to fraction form
   11,192.96/16,782.72 = 5,271.20/x
3. Step 3: Cross multiply
   11,192.96x = 16,782.72 × 5,271.20
4. Step 4: Simplify right side
   11,192.96x = 88,465,094.95
5. Step 5: Solve for x
   x = 88,465,094.95/11,192.96
6. Step 6: Final answer
   x = 7,903.64