Finding the Fourth Proportional to 21,602.69, 32,405.78 and 6,613.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,602.69 : 32,405.78 = 6,613.10 : x
2. Step 2: Convert to fraction form
   21,602.69/32,405.78 = 6,613.10/x
3. Step 3: Cross multiply
   21,602.69x = 32,405.78 × 6,613.10
4. Step 4: Simplify right side
   21,602.69x = 214,302,663.72
5. Step 5: Solve for x
   x = 214,302,663.72/21,602.69
6. Step 6: Final answer
   x = 9,920.18