Finding the Fourth Proportional to 12,068.28, 18,091.06 and 6,513.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,068.28 : 18,091.06 = 6,513.30 : x
2. Step 2: Convert to fraction form
   12,068.28/18,091.06 = 6,513.30/x
3. Step 3: Cross multiply
   12,068.28x = 18,091.06 × 6,513.30
4. Step 4: Simplify right side
   12,068.28x = 117,832,501.10
5. Step 5: Solve for x
   x = 117,832,501.10/12,068.28
6. Step 6: Final answer
   x = 9,763.82