Finding the Fourth Proportional to 39,068.49, 53,915.22 and 21,164.25

Step by Step Solution

1. Step 1: Write the proportion equation
   39,068.49 : 53,915.22 = 21,164.25 : x
2. Step 2: Convert to fraction form
   39,068.49/53,915.22 = 21,164.25/x
3. Step 3: Cross multiply
   39,068.49x = 53,915.22 × 21,164.25
4. Step 4: Simplify right side
   39,068.49x = 1,141,075,194.89
5. Step 5: Solve for x
   x = 1,141,075,194.89/39,068.49
6. Step 6: Final answer
   x = 29,207.05