Finding the Fourth Proportional to 10,518.37, 14,493.40 and 7,155.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,518.37 : 14,493.40 = 7,155.34 : x
2. Step 2: Convert to fraction form
   10,518.37/14,493.40 = 7,155.34/x
3. Step 3: Cross multiply
   10,518.37x = 14,493.40 × 7,155.34
4. Step 4: Simplify right side
   10,518.37x = 103,705,204.76
5. Step 5: Solve for x
   x = 103,705,204.76/10,518.37
6. Step 6: Final answer
   x = 9,859.44