Finding the Fourth Proportional to 12,618.27, 17,419.12 and 7,312.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,618.27 : 17,419.12 = 7,312.10 : x
2. Step 2: Convert to fraction form
   12,618.27/17,419.12 = 7,312.10/x
3. Step 3: Cross multiply
   12,618.27x = 17,419.12 × 7,312.10
4. Step 4: Simplify right side
   12,618.27x = 127,370,241.98
5. Step 5: Solve for x
   x = 127,370,241.98/12,618.27
6. Step 6: Final answer
   x = 10,094.11