Finding the Fourth Proportional to 8,830.76, 12,181.38 and 5,513

Step by Step Solution

1. Step 1: Write the proportion equation
   8,830.76 : 12,181.38 = 5,513 : x
2. Step 2: Convert to fraction form
   8,830.76/12,181.38 = 5,513/x
3. Step 3: Cross multiply
   8,830.76x = 12,181.38 × 5,513
4. Step 4: Simplify right side
   8,830.76x = 67,155,947.94
5. Step 5: Solve for x
   x = 67,155,947.94/8,830.76
6. Step 6: Final answer
   x = 7,604.78