Finding the Fourth Proportional to 13,140.72, 19,714.12 and 4,375.71

Step by Step Solution

1. Step 1: Write the proportion equation
   13,140.72 : 19,714.12 = 4,375.71 : x
2. Step 2: Convert to fraction form
   13,140.72/19,714.12 = 4,375.71/x
3. Step 3: Cross multiply
   13,140.72x = 19,714.12 × 4,375.71
4. Step 4: Simplify right side
   13,140.72x = 86,263,261.09
5. Step 5: Solve for x
   x = 86,263,261.09/13,140.72
6. Step 6: Final answer
   x = 6,564.58