Finding the Fourth Proportional to 13,779.31, 19,015.59 and 7,491.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,779.31 : 19,015.59 = 7,491.82 : x
2. Step 2: Convert to fraction form
   13,779.31/19,015.59 = 7,491.82/x
3. Step 3: Cross multiply
   13,779.31x = 19,015.59 × 7,491.82
4. Step 4: Simplify right side
   13,779.31x = 142,461,377.47
5. Step 5: Solve for x
   x = 142,461,377.47/13,779.31
6. Step 6: Final answer
   x = 10,338.79