Finding the Fourth Proportional to 13,320.06, 18,381.50 and 7,351.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,320.06 : 18,381.50 = 7,351.98 : x
2. Step 2: Convert to fraction form
   13,320.06/18,381.50 = 7,351.98/x
3. Step 3: Cross multiply
   13,320.06x = 18,381.50 × 7,351.98
4. Step 4: Simplify right side
   13,320.06x = 135,140,383.61
5. Step 5: Solve for x
   x = 135,140,383.61/13,320.06
6. Step 6: Final answer
   x = 10,145.63