Finding the Fourth Proportional to 12,810.45, 19,202.51 and 4,910.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,810.45 : 19,202.51 = 4,910.82 : x
2. Step 2: Convert to fraction form
   12,810.45/19,202.51 = 4,910.82/x
3. Step 3: Cross multiply
   12,810.45x = 19,202.51 × 4,910.82
4. Step 4: Simplify right side
   12,810.45x = 94,300,070.16
5. Step 5: Solve for x
   x = 94,300,070.16/12,810.45
6. Step 6: Final answer
   x = 7,361.18