Finding the Fourth Proportional to 13,780.64, 19,016.52 and 7,492.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,780.64 : 19,016.52 = 7,492.96 : x
2. Step 2: Convert to fraction form
   13,780.64/19,016.52 = 7,492.96/x
3. Step 3: Cross multiply
   13,780.64x = 19,016.52 × 7,492.96
4. Step 4: Simplify right side
   13,780.64x = 142,490,023.70
5. Step 5: Solve for x
   x = 142,490,023.70/13,780.64
6. Step 6: Final answer
   x = 10,339.87