Finding the Fourth Proportional to 12,874.65, 19,298.72 and 7,316.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,874.65 : 19,298.72 = 7,316.12 : x
2. Step 2: Convert to fraction form
   12,874.65/19,298.72 = 7,316.12/x
3. Step 3: Cross multiply
   12,874.65x = 19,298.72 × 7,316.12
4. Step 4: Simplify right side
   12,874.65x = 141,191,817.90
5. Step 5: Solve for x
   x = 141,191,817.90/12,874.65
6. Step 6: Final answer
   x = 10,966.66