Finding the Fourth Proportional to 12,300.48, 18,467.10 and 7,312.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,300.48 : 18,467.10 = 7,312.14 : x
2. Step 2: Convert to fraction form
   12,300.48/18,467.10 = 7,312.14/x
3. Step 3: Cross multiply
   12,300.48x = 18,467.10 × 7,312.14
4. Step 4: Simplify right side
   12,300.48x = 135,034,020.59
5. Step 5: Solve for x
   x = 135,034,020.59/12,300.48
6. Step 6: Final answer
   x = 10,977.95