Finding the Fourth Proportional to 15,499.48, 23,279.10 and 13,283.32

Step by Step Solution

1. Step 1: Write the proportion equation
   15,499.48 : 23,279.10 = 13,283.32 : x
2. Step 2: Convert to fraction form
   15,499.48/23,279.10 = 13,283.32/x
3. Step 3: Cross multiply
   15,499.48x = 23,279.10 × 13,283.32
4. Step 4: Simplify right side
   15,499.48x = 309,223,734.61
5. Step 5: Solve for x
   x = 309,223,734.61/15,499.48
6. Step 6: Final answer
   x = 19,950.59