Finding the Fourth Proportional to 13,124.68, 18,112.04 and 7,156.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,124.68 : 18,112.04 = 7,156.34 : x
2. Step 2: Convert to fraction form
   13,124.68/18,112.04 = 7,156.34/x
3. Step 3: Cross multiply
   13,124.68x = 18,112.04 × 7,156.34
4. Step 4: Simplify right side
   13,124.68x = 129,615,916.33
5. Step 5: Solve for x
   x = 129,615,916.33/13,124.68
6. Step 6: Final answer
   x = 9,875.74