Finding the Fourth Proportional to 13,166.10, 19,609.47 and 13,102.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,166.10 : 19,609.47 = 13,102.52 : x
2. Step 2: Convert to fraction form
   13,166.10/19,609.47 = 13,102.52/x
3. Step 3: Cross multiply
   13,166.10x = 19,609.47 × 13,102.52
4. Step 4: Simplify right side
   13,166.10x = 256,933,374.82
5. Step 5: Solve for x
   x = 256,933,374.82/13,166.10
6. Step 6: Final answer
   x = 19,514.77