Finding the Fourth Proportional to 13,663.71, 20,498.31 and 4,306.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,663.71 : 20,498.31 = 4,306.10 : x
2. Step 2: Convert to fraction form
   13,663.71/20,498.31 = 4,306.10/x
3. Step 3: Cross multiply
   13,663.71x = 20,498.31 × 4,306.10
4. Step 4: Simplify right side
   13,663.71x = 88,267,670.20
5. Step 5: Solve for x
   x = 88,267,670.20/13,663.71
6. Step 6: Final answer
   x = 6,460.01