Finding the Fourth Proportional to 13,457.64, 18,569.72 and 7,488.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,457.64 : 18,569.72 = 7,488.54 : x
2. Step 2: Convert to fraction form
   13,457.64/18,569.72 = 7,488.54/x
3. Step 3: Cross multiply
   13,457.64x = 18,569.72 × 7,488.54
4. Step 4: Simplify right side
   13,457.64x = 139,060,053.57
5. Step 5: Solve for x
   x = 139,060,053.57/13,457.64
6. Step 6: Final answer
   x = 10,333.17