Finding the Fourth Proportional to 13,555.98, 18,708.42 and 7,587.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,555.98 : 18,708.42 = 7,587.56 : x
2. Step 2: Convert to fraction form
   13,555.98/18,708.42 = 7,587.56/x
3. Step 3: Cross multiply
   13,555.98x = 18,708.42 × 7,587.56
4. Step 4: Simplify right side
   13,555.98x = 141,951,165.71
5. Step 5: Solve for x
   x = 141,951,165.71/13,555.98
6. Step 6: Final answer
   x = 10,471.48