Finding the Fourth Proportional to 13,148.90, 18,145.59 and 7,484.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,148.90 : 18,145.59 = 7,484.09 : x
2. Step 2: Convert to fraction form
   13,148.90/18,145.59 = 7,484.09/x
3. Step 3: Cross multiply
   13,148.90x = 18,145.59 × 7,484.09
4. Step 4: Simplify right side
   13,148.90x = 135,803,100.51
5. Step 5: Solve for x
   x = 135,803,100.51/13,148.90
6. Step 6: Final answer
   x = 10,328.10