Finding the Fourth Proportional to 13,561.76, 18,714.68 and 7,593.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,561.76 : 18,714.68 = 7,593.31 : x
2. Step 2: Convert to fraction form
   13,561.76/18,714.68 = 7,593.31/x
3. Step 3: Cross multiply
   13,561.76x = 18,714.68 × 7,593.31
4. Step 4: Simplify right side
   13,561.76x = 142,106,380.69
5. Step 5: Solve for x
   x = 142,106,380.69/13,561.76
6. Step 6: Final answer
   x = 10,478.46