Finding the Fourth Proportional to 13,511.98, 18,646.41 and 7,543.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,511.98 : 18,646.41 = 7,543.27 : x
2. Step 2: Convert to fraction form
   13,511.98/18,646.41 = 7,543.27/x
3. Step 3: Cross multiply
   13,511.98x = 18,646.41 × 7,543.27
4. Step 4: Simplify right side
   13,511.98x = 140,654,905.16
5. Step 5: Solve for x
   x = 140,654,905.16/13,511.98
6. Step 6: Final answer
   x = 10,409.64