Finding the Fourth Proportional to 13,152.39, 18,149.78 and 7,184.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,152.39 : 18,149.78 = 7,184.06 : x
2. Step 2: Convert to fraction form
   13,152.39/18,149.78 = 7,184.06/x
3. Step 3: Cross multiply
   13,152.39x = 18,149.78 × 7,184.06
4. Step 4: Simplify right side
   13,152.39x = 130,389,108.51
5. Step 5: Solve for x
   x = 130,389,108.51/13,152.39
6. Step 6: Final answer
   x = 9,913.72