Finding the Fourth Proportional to 31,068.36, 46,603.76 and 13,538.34

Step by Step Solution

1. Step 1: Write the proportion equation
   31,068.36 : 46,603.76 = 13,538.34 : x
2. Step 2: Convert to fraction form
   31,068.36/46,603.76 = 13,538.34/x
3. Step 3: Cross multiply
   31,068.36x = 46,603.76 × 13,538.34
4. Step 4: Simplify right side
   31,068.36x = 630,937,480.47
5. Step 5: Solve for x
   x = 630,937,480.47/31,068.36
6. Step 6: Final answer
   x = 20,308.04