Finding the Fourth Proportional to 13,417.25, 18,515.12 and 7,448.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,417.25 : 18,515.12 = 7,448.76 : x
2. Step 2: Convert to fraction form
   13,417.25/18,515.12 = 7,448.76/x
3. Step 3: Cross multiply
   13,417.25x = 18,515.12 × 7,448.76
4. Step 4: Simplify right side
   13,417.25x = 137,914,648.01
5. Step 5: Solve for x
   x = 137,914,648.01/13,417.25
6. Step 6: Final answer
   x = 10,278.91