Finding the Fourth Proportional to 9,810.72, 14,719.73 and 5,422.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,810.72 : 14,719.73 = 5,422.14 : x
2. Step 2: Convert to fraction form
   9,810.72/14,719.73 = 5,422.14/x
3. Step 3: Cross multiply
   9,810.72x = 14,719.73 × 5,422.14
4. Step 4: Simplify right side
   9,810.72x = 79,812,409.71
5. Step 5: Solve for x
   x = 79,812,409.71/9,810.72
6. Step 6: Final answer
   x = 8,135.22