Finding the Fourth Proportional to 13,780.31, 19,016.15 and 7,492.68

Step by Step Solution

1. Step 1: Write the proportion equation
   13,780.31 : 19,016.15 = 7,492.68 : x
2. Step 2: Convert to fraction form
   13,780.31/19,016.15 = 7,492.68/x
3. Step 3: Cross multiply
   13,780.31x = 19,016.15 × 7,492.68
4. Step 4: Simplify right side
   13,780.31x = 142,481,889.32
5. Step 5: Solve for x
   x = 142,481,889.32/13,780.31
6. Step 6: Final answer
   x = 10,339.53