Finding the Fourth Proportional to 13,298.51, 18,347.31 and 7,629.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,298.51 : 18,347.31 = 7,629.32 : x
2. Step 2: Convert to fraction form
   13,298.51/18,347.31 = 7,629.32/x
3. Step 3: Cross multiply
   13,298.51x = 18,347.31 × 7,629.32
4. Step 4: Simplify right side
   13,298.51x = 139,977,545.00
5. Step 5: Solve for x
   x = 139,977,545.00/13,298.51
6. Step 6: Final answer
   x = 10,525.80