Finding the Fourth Proportional to 13,427.18, 18,529.79 and 7,762.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,427.18 : 18,529.79 = 7,762.10 : x
2. Step 2: Convert to fraction form
   13,427.18/18,529.79 = 7,762.10/x
3. Step 3: Cross multiply
   13,427.18x = 18,529.79 × 7,762.10
4. Step 4: Simplify right side
   13,427.18x = 143,830,082.96
5. Step 5: Solve for x
   x = 143,830,082.96/13,427.18
6. Step 6: Final answer
   x = 10,711.86