Finding the Fourth Proportional to 13,303.10, 18,356.82 and 7,636.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,303.10 : 18,356.82 = 7,636.34 : x
2. Step 2: Convert to fraction form
   13,303.10/18,356.82 = 7,636.34/x
3. Step 3: Cross multiply
   13,303.10x = 18,356.82 × 7,636.34
4. Step 4: Simplify right side
   13,303.10x = 140,178,918.84
5. Step 5: Solve for x
   x = 140,178,918.84/13,303.10
6. Step 6: Final answer
   x = 10,537.31