Finding the Fourth Proportional to 12,892.16, 17,789.88 and 7,513.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,892.16 : 17,789.88 = 7,513.76 : x
2. Step 2: Convert to fraction form
   12,892.16/17,789.88 = 7,513.76/x
3. Step 3: Cross multiply
   12,892.16x = 17,789.88 × 7,513.76
4. Step 4: Simplify right side
   12,892.16x = 133,668,888.75
5. Step 5: Solve for x
   x = 133,668,888.75/12,892.16
6. Step 6: Final answer
   x = 10,368.23