Finding the Fourth Proportional to 13,288.30, 19,934.90 and 5,497.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,288.30 : 19,934.90 = 5,497.72 : x
2. Step 2: Convert to fraction form
   13,288.30/19,934.90 = 5,497.72/x
3. Step 3: Cross multiply
   13,288.30x = 19,934.90 × 5,497.72
4. Step 4: Simplify right side
   13,288.30x = 109,596,498.43
5. Step 5: Solve for x
   x = 109,596,498.43/13,288.30
6. Step 6: Final answer
   x = 8,247.59