Finding the Fourth Proportional to 5,100.72, 7,650.86 and 1,813.84

Step by Step Solution

1. Step 1: Write the proportion equation
   5,100.72 : 7,650.86 = 1,813.84 : x
2. Step 2: Convert to fraction form
   5,100.72/7,650.86 = 1,813.84/x
3. Step 3: Cross multiply
   5,100.72x = 7,650.86 × 1,813.84
4. Step 4: Simplify right side
   5,100.72x = 13,877,450.74
5. Step 5: Solve for x
   x = 13,877,450.74/5,100.72
6. Step 6: Final answer
   x = 2,720.68