Finding the Fourth Proportional to 13,540.84, 18,686.82 and 7,572.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,540.84 : 18,686.82 = 7,572.76 : x
2. Step 2: Convert to fraction form
   13,540.84/18,686.82 = 7,572.76/x
3. Step 3: Cross multiply
   13,540.84x = 18,686.82 × 7,572.76
4. Step 4: Simplify right side
   13,540.84x = 141,510,803.02
5. Step 5: Solve for x
   x = 141,510,803.02/13,540.84
6. Step 6: Final answer
   x = 10,450.67