Finding the Fourth Proportional to 13,434.98, 18,538.86 and 7,768.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,434.98 : 18,538.86 = 7,768.82 : x
2. Step 2: Convert to fraction form
   13,434.98/18,538.86 = 7,768.82/x
3. Step 3: Cross multiply
   13,434.98x = 18,538.86 × 7,768.82
4. Step 4: Simplify right side
   13,434.98x = 144,025,066.35
5. Step 5: Solve for x
   x = 144,025,066.35/13,434.98
6. Step 6: Final answer
   x = 10,720.15