Finding the Fourth Proportional to 2,669.30, 4,012.59 and 2,656.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,669.30 : 4,012.59 = 2,656.34 : x
2. Step 2: Convert to fraction form
   2,669.30/4,012.59 = 2,656.34/x
3. Step 3: Cross multiply
   2,669.30x = 4,012.59 × 2,656.34
4. Step 4: Simplify right side
   2,669.30x = 10,658,803.32
5. Step 5: Solve for x
   x = 10,658,803.32/2,669.30
6. Step 6: Final answer
   x = 3,993.11