Finding the Fourth Proportional to 13,780.38, 19,016.91 and 7,492.74

Step by Step Solution

1. Step 1: Write the proportion equation
   13,780.38 : 19,016.91 = 7,492.74 : x
2. Step 2: Convert to fraction form
   13,780.38/19,016.91 = 7,492.74/x
3. Step 3: Cross multiply
   13,780.38x = 19,016.91 × 7,492.74
4. Step 4: Simplify right side
   13,780.38x = 142,488,762.23
5. Step 5: Solve for x
   x = 142,488,762.23/13,780.38
6. Step 6: Final answer
   x = 10,339.97