Finding the Fourth Proportional to 11,374.16, 15,690.78 and 9,799.52

Step by Step Solution

1. Step 1: Write the proportion equation
   11,374.16 : 15,690.78 = 9,799.52 : x
2. Step 2: Convert to fraction form
   11,374.16/15,690.78 = 9,799.52/x
3. Step 3: Cross multiply
   11,374.16x = 15,690.78 × 9,799.52
4. Step 4: Simplify right side
   11,374.16x = 153,762,112.43
5. Step 5: Solve for x
   x = 153,762,112.43/11,374.16
6. Step 6: Final answer
   x = 13,518.55