Finding the Fourth Proportional to 39,066.08, 53,910.81 and 21,160.02

Step by Step Solution

1. Step 1: Write the proportion equation
   39,066.08 : 53,910.81 = 21,160.02 : x
2. Step 2: Convert to fraction form
   39,066.08/53,910.81 = 21,160.02/x
3. Step 3: Cross multiply
   39,066.08x = 53,910.81 × 21,160.02
4. Step 4: Simplify right side
   39,066.08x = 1,140,753,817.82
5. Step 5: Solve for x
   x = 1,140,753,817.82/39,066.08
6. Step 6: Final answer
   x = 29,200.63