Finding the Fourth Proportional to 13,498.77, 18,628.17 and 7,449.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,498.77 : 18,628.17 = 7,449.06 : x
2. Step 2: Convert to fraction form
   13,498.77/18,628.17 = 7,449.06/x
3. Step 3: Cross multiply
   13,498.77x = 18,628.17 × 7,449.06
4. Step 4: Simplify right side
   13,498.77x = 138,762,356.02
5. Step 5: Solve for x
   x = 138,762,356.02/13,498.77
6. Step 6: Final answer
   x = 10,279.63