Finding the Fourth Proportional to 13,778.88, 19,014.84 and 7,491.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,778.88 : 19,014.84 = 7,491.30 : x
2. Step 2: Convert to fraction form
   13,778.88/19,014.84 = 7,491.30/x
3. Step 3: Cross multiply
   13,778.88x = 19,014.84 × 7,491.30
4. Step 4: Simplify right side
   13,778.88x = 142,445,870.89
5. Step 5: Solve for x
   x = 142,445,870.89/13,778.88
6. Step 6: Final answer
   x = 10,337.99