Finding the Fourth Proportional to 13,779.56, 19,015.89 and 7,491.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,779.56 : 19,015.89 = 7,491.94 : x
2. Step 2: Convert to fraction form
   13,779.56/19,015.89 = 7,491.94/x
3. Step 3: Cross multiply
   13,779.56x = 19,015.89 × 7,491.94
4. Step 4: Simplify right side
   13,779.56x = 142,465,906.93
5. Step 5: Solve for x
   x = 142,465,906.93/13,779.56
6. Step 6: Final answer
   x = 10,338.93