Finding the Fourth Proportional to 13,061.32, 18,030.13 and 8,818.13

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.32 : 18,030.13 = 8,818.13 : x
2. Step 2: Convert to fraction form
   13,061.32/18,030.13 = 8,818.13/x
3. Step 3: Cross multiply
   13,061.32x = 18,030.13 × 8,818.13
4. Step 4: Simplify right side
   13,061.32x = 158,991,985.28
5. Step 5: Solve for x
   x = 158,991,985.28/13,061.32
6. Step 6: Final answer
   x = 12,172.74