Finding the Fourth Proportional to 13,429.18, 18,532.56 and 7,764.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,429.18 : 18,532.56 = 7,764.10 : x
2. Step 2: Convert to fraction form
   13,429.18/18,532.56 = 7,764.10/x
3. Step 3: Cross multiply
   13,429.18x = 18,532.56 × 7,764.10
4. Step 4: Simplify right side
   13,429.18x = 143,888,649.10
5. Step 5: Solve for x
   x = 143,888,649.10/13,429.18
6. Step 6: Final answer
   x = 10,714.63