Finding the Fourth Proportional to 21,061.08, 29,073.60 and 12,566.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061.08 : 29,073.60 = 12,566.16 : x
2. Step 2: Convert to fraction form
   21,061.08/29,073.60 = 12,566.16/x
3. Step 3: Cross multiply
   21,061.08x = 29,073.60 × 12,566.16
4. Step 4: Simplify right side
   21,061.08x = 365,343,509.38
5. Step 5: Solve for x
   x = 365,343,509.38/21,061.08
6. Step 6: Final answer
   x = 17,346.86