Finding the Fourth Proportional to 13,086.87, 18,060.35 and 7,498.95

Step by Step Solution

1. Step 1: Write the proportion equation
   13,086.87 : 18,060.35 = 7,498.95 : x
2. Step 2: Convert to fraction form
   13,086.87/18,060.35 = 7,498.95/x
3. Step 3: Cross multiply
   13,086.87x = 18,060.35 × 7,498.95
4. Step 4: Simplify right side
   13,086.87x = 135,433,598.59
5. Step 5: Solve for x
   x = 135,433,598.59/13,086.87
6. Step 6: Final answer
   x = 10,348.82