Finding the Fourth Proportional to 19,778.42, 29,669.61 and 7,301.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,778.42 : 29,669.61 = 7,301.72 : x
2. Step 2: Convert to fraction form
   19,778.42/29,669.61 = 7,301.72/x
3. Step 3: Cross multiply
   19,778.42x = 29,669.61 × 7,301.72
4. Step 4: Simplify right side
   19,778.42x = 216,639,184.73
5. Step 5: Solve for x
   x = 216,639,184.73/19,778.42
6. Step 6: Final answer
   x = 10,953.31