Finding the Fourth Proportional to 13,417.81, 18,513.78 and 7,752.46

Step by Step Solution

1. Step 1: Write the proportion equation
   13,417.81 : 18,513.78 = 7,752.46 : x
2. Step 2: Convert to fraction form
   13,417.81/18,513.78 = 7,752.46/x
3. Step 3: Cross multiply
   13,417.81x = 18,513.78 × 7,752.46
4. Step 4: Simplify right side
   13,417.81x = 143,527,338.90
5. Step 5: Solve for x
   x = 143,527,338.90/13,417.81
6. Step 6: Final answer
   x = 10,696.78