Finding the Fourth Proportional to 32,160, 48,219.30 and 13,435.02

Step by Step Solution

1. Step 1: Write the proportion equation
   32,160 : 48,219.30 = 13,435.02 : x
2. Step 2: Convert to fraction form
   32,160/48,219.30 = 13,435.02/x
3. Step 3: Cross multiply
   32,160x = 48,219.30 × 13,435.02
4. Step 4: Simplify right side
   32,160x = 647,827,259.89
5. Step 5: Solve for x
   x = 647,827,259.89/32,160
6. Step 6: Final answer
   x = 20,143.88