Finding the Fourth Proportional to 11,478.72, 15,843.28 and 7,492.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,478.72 : 15,843.28 = 7,492.80 : x
2. Step 2: Convert to fraction form
   11,478.72/15,843.28 = 7,492.80/x
3. Step 3: Cross multiply
   11,478.72x = 15,843.28 × 7,492.80
4. Step 4: Simplify right side
   11,478.72x = 118,710,528.38
5. Step 5: Solve for x
   x = 118,710,528.38/11,478.72
6. Step 6: Final answer
   x = 10,341.79