Finding the Fourth Proportional to 13,061.12, 18,024.74 and 7,395.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.12 : 18,024.74 = 7,395.78 : x
2. Step 2: Convert to fraction form
   13,061.12/18,024.74 = 7,395.78/x
3. Step 3: Cross multiply
   13,061.12x = 18,024.74 × 7,395.78
4. Step 4: Simplify right side
   13,061.12x = 133,307,011.60
5. Step 5: Solve for x
   x = 133,307,011.60/13,061.12
6. Step 6: Final answer
   x = 10,206.40