Finding the Fourth Proportional to 19,142.19, 28,714.91 and 5,104.35

Step by Step Solution

1. Step 1: Write the proportion equation
   19,142.19 : 28,714.91 = 5,104.35 : x
2. Step 2: Convert to fraction form
   19,142.19/28,714.91 = 5,104.35/x
3. Step 3: Cross multiply
   19,142.19x = 28,714.91 × 5,104.35
4. Step 4: Simplify right side
   19,142.19x = 146,570,925.34
5. Step 5: Solve for x
   x = 146,570,925.34/19,142.19
6. Step 6: Final answer
   x = 7,656.96