Finding the Fourth Proportional to 13,124, 18,111.12 and 7,236

Step by Step Solution

1. Step 1: Write the proportion equation
   13,124 : 18,111.12 = 7,236 : x
2. Step 2: Convert to fraction form
   13,124/18,111.12 = 7,236/x
3. Step 3: Cross multiply
   13,124x = 18,111.12 × 7,236
4. Step 4: Simplify right side
   13,124x = 131,052,064.32
5. Step 5: Solve for x
   x = 131,052,064.32/13,124
6. Step 6: Final answer
   x = 9,985.68