Finding the Fourth Proportional to 12,347.47, 18,502.62 and 7,411.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,347.47 : 18,502.62 = 7,411.72 : x
2. Step 2: Convert to fraction form
   12,347.47/18,502.62 = 7,411.72/x
3. Step 3: Cross multiply
   12,347.47x = 18,502.62 × 7,411.72
4. Step 4: Simplify right side
   12,347.47x = 137,136,238.71
5. Step 5: Solve for x
   x = 137,136,238.71/12,347.47
6. Step 6: Final answer
   x = 11,106.42