Finding the Fourth Proportional to 21,484.02, 29,648.70 and 12,530.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,484.02 : 29,648.70 = 12,530.10 : x
2. Step 2: Convert to fraction form
   21,484.02/29,648.70 = 12,530.10/x
3. Step 3: Cross multiply
   21,484.02x = 29,648.70 × 12,530.10
4. Step 4: Simplify right side
   21,484.02x = 371,501,175.87
5. Step 5: Solve for x
   x = 371,501,175.87/21,484.02
6. Step 6: Final answer
   x = 17,291.98