Finding the Fourth Proportional to 13,513, 18,647.58 and 7,544.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,513 : 18,647.58 = 7,544.50 : x
2. Step 2: Convert to fraction form
   13,513/18,647.58 = 7,544.50/x
3. Step 3: Cross multiply
   13,513x = 18,647.58 × 7,544.50
4. Step 4: Simplify right side
   13,513x = 140,686,667.31
5. Step 5: Solve for x
   x = 140,686,667.31/13,513
6. Step 6: Final answer
   x = 10,411.21