Finding the Fourth Proportional to 19,591.96, 29,393.63 and 7,111.78

Step by Step Solution

1. Step 1: Write the proportion equation
   19,591.96 : 29,393.63 = 7,111.78 : x
2. Step 2: Convert to fraction form
   19,591.96/29,393.63 = 7,111.78/x
3. Step 3: Cross multiply
   19,591.96x = 29,393.63 × 7,111.78
4. Step 4: Simplify right side
   19,591.96x = 209,040,994.40
5. Step 5: Solve for x
   x = 209,040,994.40/19,591.96
6. Step 6: Final answer
   x = 10,669.74