Finding the Fourth Proportional to 32,813.60, 45,267 and 21,478.10

Step by Step Solution

1. Step 1: Write the proportion equation
   32,813.60 : 45,267 = 21,478.10 : x
2. Step 2: Convert to fraction form
   32,813.60/45,267 = 21,478.10/x
3. Step 3: Cross multiply
   32,813.60x = 45,267 × 21,478.10
4. Step 4: Simplify right side
   32,813.60x = 972,248,926.37
5. Step 5: Solve for x
   x = 972,248,926.37/32,813.60
6. Step 6: Final answer
   x = 29,629.45