Finding the Fourth Proportional to 12,706.60, 19,061.42 and 4,810.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,706.60 : 19,061.42 = 4,810.36 : x
2. Step 2: Convert to fraction form
   12,706.60/19,061.42 = 4,810.36/x
3. Step 3: Cross multiply
   12,706.60x = 19,061.42 × 4,810.36
4. Step 4: Simplify right side
   12,706.60x = 91,692,292.31
5. Step 5: Solve for x
   x = 91,692,292.31/12,706.60
6. Step 6: Final answer
   x = 7,216.12