Finding the Fourth Proportional to 21,492.72, 29,663.16 and 12,545.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,492.72 : 29,663.16 = 12,545.12 : x
2. Step 2: Convert to fraction form
   21,492.72/29,663.16 = 12,545.12/x
3. Step 3: Cross multiply
   21,492.72x = 29,663.16 × 12,545.12
4. Step 4: Simplify right side
   21,492.72x = 372,127,901.78
5. Step 5: Solve for x
   x = 372,127,901.78/21,492.72
6. Step 6: Final answer
   x = 17,314.14