Finding the Fourth Proportional to 13,124.67, 18,112.03 and 7,156.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,124.67 : 18,112.03 = 7,156.34 : x
2. Step 2: Convert to fraction form
   13,124.67/18,112.03 = 7,156.34/x
3. Step 3: Cross multiply
   13,124.67x = 18,112.03 × 7,156.34
4. Step 4: Simplify right side
   13,124.67x = 129,615,844.77
5. Step 5: Solve for x
   x = 129,615,844.77/13,124.67
6. Step 6: Final answer
   x = 9,875.74