Finding the Fourth Proportional to 13,530.18, 18,670.71 and 7,561.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,530.18 : 18,670.71 = 7,561.62 : x
2. Step 2: Convert to fraction form
   13,530.18/18,670.71 = 7,561.62/x
3. Step 3: Cross multiply
   13,530.18x = 18,670.71 × 7,561.62
4. Step 4: Simplify right side
   13,530.18x = 141,180,814.15
5. Step 5: Solve for x
   x = 141,180,814.15/13,530.18
6. Step 6: Final answer
   x = 10,434.51