Finding the Fourth Proportional to 9,123.50, 13,684.53 and 5,613.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.50 : 13,684.53 = 5,613.98 : x
2. Step 2: Convert to fraction form
   9,123.50/13,684.53 = 5,613.98/x
3. Step 3: Cross multiply
   9,123.50x = 13,684.53 × 5,613.98
4. Step 4: Simplify right side
   9,123.50x = 76,824,609.31
5. Step 5: Solve for x
   x = 76,824,609.31/9,123.50
6. Step 6: Final answer
   x = 8,420.52