Finding the Fourth Proportional to 39,111.00, 53,973.30 and 21,206.01

Step by Step Solution

1. Step 1: Write the proportion equation
   39,111.00 : 53,973.30 = 21,206.01 : x
2. Step 2: Convert to fraction form
   39,111.00/53,973.30 = 21,206.01/x
3. Step 3: Cross multiply
   39,111.00x = 53,973.30 × 21,206.01
4. Step 4: Simplify right side
   39,111.00x = 1,144,558,474.47
5. Step 5: Solve for x
   x = 1,144,558,474.47/39,111.00
6. Step 6: Final answer
   x = 29,264.36