Finding the Fourth Proportional to 42,714.48, 64,071.72 and 15,006

Step by Step Solution

1. Step 1: Write the proportion equation
   42,714.48 : 64,071.72 = 15,006 : x
2. Step 2: Convert to fraction form
   42,714.48/64,071.72 = 15,006/x
3. Step 3: Cross multiply
   42,714.48x = 64,071.72 × 15,006
4. Step 4: Simplify right side
   42,714.48x = 961,460,230.32
5. Step 5: Solve for x
   x = 961,460,230.32/42,714.48
6. Step 6: Final answer
   x = 22,509