Finding the Fourth Proportional to 19,719.30, 29,561.32 and 7,236.43

Step by Step Solution

1. Step 1: Write the proportion equation
   19,719.30 : 29,561.32 = 7,236.43 : x
2. Step 2: Convert to fraction form
   19,719.30/29,561.32 = 7,236.43/x
3. Step 3: Cross multiply
   19,719.30x = 29,561.32 × 7,236.43
4. Step 4: Simplify right side
   19,719.30x = 213,918,422.89
5. Step 5: Solve for x
   x = 213,918,422.89/19,719.30
6. Step 6: Final answer
   x = 10,848.18