Finding the Fourth Proportional to 21,068.69, 31,577.60 and 7,730.93

Step by Step Solution

1. Step 1: Write the proportion equation
   21,068.69 : 31,577.60 = 7,730.93 : x
2. Step 2: Convert to fraction form
   21,068.69/31,577.60 = 7,730.93/x
3. Step 3: Cross multiply
   21,068.69x = 31,577.60 × 7,730.93
4. Step 4: Simplify right side
   21,068.69x = 244,124,018.63
5. Step 5: Solve for x
   x = 244,124,018.63/21,068.69
6. Step 6: Final answer
   x = 11,587.06