Finding the Fourth Proportional to 21,075.86, 29,030.16 and 14,691.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,075.86 : 29,030.16 = 14,691.06 : x
2. Step 2: Convert to fraction form
   21,075.86/29,030.16 = 14,691.06/x
3. Step 3: Cross multiply
   21,075.86x = 29,030.16 × 14,691.06
4. Step 4: Simplify right side
   21,075.86x = 426,483,822.37
5. Step 5: Solve for x
   x = 426,483,822.37/21,075.86
6. Step 6: Final answer
   x = 20,235.66