Finding the Fourth Proportional to 39,061.02, 53,903.57 and 21,155.88

Step by Step Solution

1. Step 1: Write the proportion equation
   39,061.02 : 53,903.57 = 21,155.88 : x
2. Step 2: Convert to fraction form
   39,061.02/53,903.57 = 21,155.88/x
3. Step 3: Cross multiply
   39,061.02x = 53,903.57 × 21,155.88
4. Step 4: Simplify right side
   39,061.02x = 1,140,377,352.71
5. Step 5: Solve for x
   x = 1,140,377,352.71/39,061.02
6. Step 6: Final answer
   x = 29,194.77