Finding the Fourth Proportional to 13,086.74, 18,060.16 and 7,498.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,086.74 : 18,060.16 = 7,498.82 : x
2. Step 2: Convert to fraction form
   13,086.74/18,060.16 = 7,498.82/x
3. Step 3: Cross multiply
   13,086.74x = 18,060.16 × 7,498.82
4. Step 4: Simplify right side
   13,086.74x = 135,429,889.01
5. Step 5: Solve for x
   x = 135,429,889.01/13,086.74
6. Step 6: Final answer
   x = 10,348.63