Finding the Fourth Proportional to 21,430.53, 32,150.92 and 8,943.60

Step by Step Solution

1. Step 1: Write the proportion equation
   21,430.53 : 32,150.92 = 8,943.60 : x
2. Step 2: Convert to fraction form
   21,430.53/32,150.92 = 8,943.60/x
3. Step 3: Cross multiply
   21,430.53x = 32,150.92 × 8,943.60
4. Step 4: Simplify right side
   21,430.53x = 287,545,066.77
5. Step 5: Solve for x
   x = 287,545,066.77/21,430.53
6. Step 6: Final answer
   x = 13,417.55