Finding the Fourth Proportional to 21,056.16, 29,056.72 and 11,624.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,056.16 : 29,056.72 = 11,624.52 : x
2. Step 2: Convert to fraction form
   21,056.16/29,056.72 = 11,624.52/x
3. Step 3: Cross multiply
   21,056.16x = 29,056.72 × 11,624.52
4. Step 4: Simplify right side
   21,056.16x = 337,770,422.77
5. Step 5: Solve for x
   x = 337,770,422.77/21,056.16
6. Step 6: Final answer
   x = 16,041.41