Finding the Fourth Proportional to 12,407.31, 18,606.31 and 4,507.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,407.31 : 18,606.31 = 4,507.88 : x
2. Step 2: Convert to fraction form
   12,407.31/18,606.31 = 4,507.88/x
3. Step 3: Cross multiply
   12,407.31x = 18,606.31 × 4,507.88
4. Step 4: Simplify right side
   12,407.31x = 83,875,012.72
5. Step 5: Solve for x
   x = 83,875,012.72/12,407.31
6. Step 6: Final answer
   x = 6,760.13