Finding the Fourth Proportional to 12,342.18, 18,483.60 and 7,061.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,342.18 : 18,483.60 = 7,061.18 : x
2. Step 2: Convert to fraction form
   12,342.18/18,483.60 = 7,061.18/x
3. Step 3: Cross multiply
   12,342.18x = 18,483.60 × 7,061.18
4. Step 4: Simplify right side
   12,342.18x = 130,516,026.65
5. Step 5: Solve for x
   x = 130,516,026.65/12,342.18
6. Step 6: Final answer
   x = 10,574.80