Finding the Fourth Proportional to 13,780.10, 19,016.43 and 7,492.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,780.10 : 19,016.43 = 7,492.47 : x
2. Step 2: Convert to fraction form
   13,780.10/19,016.43 = 7,492.47/x
3. Step 3: Cross multiply
   13,780.10x = 19,016.43 × 7,492.47
4. Step 4: Simplify right side
   13,780.10x = 142,480,031.28
5. Step 5: Solve for x
   x = 142,480,031.28/13,780.10
6. Step 6: Final answer
   x = 10,339.55