Finding the Fourth Proportional to 13,264.98, 19,898.72 and 3,905.01

Step by Step Solution

1. Step 1: Write the proportion equation
   13,264.98 : 19,898.72 = 3,905.01 : x
2. Step 2: Convert to fraction form
   13,264.98/19,898.72 = 3,905.01/x
3. Step 3: Cross multiply
   13,264.98x = 19,898.72 × 3,905.01
4. Step 4: Simplify right side
   13,264.98x = 77,704,700.59
5. Step 5: Solve for x
   x = 77,704,700.59/13,264.98
6. Step 6: Final answer
   x = 5,857.88