Finding the Fourth Proportional to 13,109.60, 18,071.04 and 10,452.80

Step by Step Solution

1. Step 1: Write the proportion equation
   13,109.60 : 18,071.04 = 10,452.80 : x
2. Step 2: Convert to fraction form
   13,109.60/18,071.04 = 10,452.80/x
3. Step 3: Cross multiply
   13,109.60x = 18,071.04 × 10,452.80
4. Step 4: Simplify right side
   13,109.60x = 188,892,966.91
5. Step 5: Solve for x
   x = 188,892,966.91/13,109.60
6. Step 6: Final answer
   x = 14,408.75