Finding the Fourth Proportional to 10,595.91, 15,910.83 and 8,742.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,595.91 : 15,910.83 = 8,742.99 : x
2. Step 2: Convert to fraction form
   10,595.91/15,910.83 = 8,742.99/x
3. Step 3: Cross multiply
   10,595.91x = 15,910.83 × 8,742.99
4. Step 4: Simplify right side
   10,595.91x = 139,108,227.58
5. Step 5: Solve for x
   x = 139,108,227.58/10,595.91
6. Step 6: Final answer
   x = 13,128.48