Finding the Fourth Proportional to 13,764.45, 18,995.01 and 7,476.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,764.45 : 18,995.01 = 7,476.78 : x
2. Step 2: Convert to fraction form
   13,764.45/18,995.01 = 7,476.78/x
3. Step 3: Cross multiply
   13,764.45x = 18,995.01 × 7,476.78
4. Step 4: Simplify right side
   13,764.45x = 142,021,510.87
5. Step 5: Solve for x
   x = 142,021,510.87/13,764.45
6. Step 6: Final answer
   x = 10,317.99