Finding the Fourth Proportional to 13,450.71, 18,561.47 and 7,482.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,450.71 : 18,561.47 = 7,482.18 : x
2. Step 2: Convert to fraction form
   13,450.71/18,561.47 = 7,482.18/x
3. Step 3: Cross multiply
   13,450.71x = 18,561.47 × 7,482.18
4. Step 4: Simplify right side
   13,450.71x = 138,880,222.19
5. Step 5: Solve for x
   x = 138,880,222.19/13,450.71
6. Step 6: Final answer
   x = 10,325.12