Finding the Fourth Proportional to 10,005.55, 14,994.91 and 7,787.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,005.55 : 14,994.91 = 7,787.06 : x
2. Step 2: Convert to fraction form
   10,005.55/14,994.91 = 7,787.06/x
3. Step 3: Cross multiply
   10,005.55x = 14,994.91 × 7,787.06
4. Step 4: Simplify right side
   10,005.55x = 116,766,244.40
5. Step 5: Solve for x
   x = 116,766,244.40/10,005.55
6. Step 6: Final answer
   x = 11,670.15