Finding the Fourth Proportional to 8,513.95, 11,742.59 and 5,530.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,513.95 : 11,742.59 = 5,530.74 : x
2. Step 2: Convert to fraction form
   8,513.95/11,742.59 = 5,530.74/x
3. Step 3: Cross multiply
   8,513.95x = 11,742.59 × 5,530.74
4. Step 4: Simplify right side
   8,513.95x = 64,945,184.56
5. Step 5: Solve for x
   x = 64,945,184.56/8,513.95
6. Step 6: Final answer
   x = 7,628.09