Finding the Fourth Proportional to 10,555.56, 15,835.74 and 5,622.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,555.56 : 15,835.74 = 5,622.60 : x
2. Step 2: Convert to fraction form
   10,555.56/15,835.74 = 5,622.60/x
3. Step 3: Cross multiply
   10,555.56x = 15,835.74 × 5,622.60
4. Step 4: Simplify right side
   10,555.56x = 89,038,031.72
5. Step 5: Solve for x
   x = 89,038,031.72/10,555.56
6. Step 6: Final answer
   x = 8,435.18