Finding the Fourth Proportional to 9,558.56, 13,191.64 and 5,580.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,558.56 : 13,191.64 = 5,580.94 : x
2. Step 2: Convert to fraction form
   9,558.56/13,191.64 = 5,580.94/x
3. Step 3: Cross multiply
   9,558.56x = 13,191.64 × 5,580.94
4. Step 4: Simplify right side
   9,558.56x = 73,621,751.34
5. Step 5: Solve for x
   x = 73,621,751.34/9,558.56
6. Step 6: Final answer
   x = 7,702.18