Finding the Fourth Proportional to 8,818.56, 12,148.47 and 7,555.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,818.56 : 12,148.47 = 7,555.59 : x
2. Step 2: Convert to fraction form
   8,818.56/12,148.47 = 7,555.59/x
3. Step 3: Cross multiply
   8,818.56x = 12,148.47 × 7,555.59
4. Step 4: Simplify right side
   8,818.56x = 91,788,858.45
5. Step 5: Solve for x
   x = 91,788,858.45/8,818.56
6. Step 6: Final answer
   x = 10,408.60