Finding the Fourth Proportional to 13,009.10, 19,514.55 and 5,217.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,009.10 : 19,514.55 = 5,217.91 : x
2. Step 2: Convert to fraction form
   13,009.10/19,514.55 = 5,217.91/x
3. Step 3: Cross multiply
   13,009.10x = 19,514.55 × 5,217.91
4. Step 4: Simplify right side
   13,009.10x = 101,825,068.02
5. Step 5: Solve for x
   x = 101,825,068.02/13,009.10
6. Step 6: Final answer
   x = 7,827.22