Finding the Fourth Proportional to 13,323.01, 19,985.61 and 7,776.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,323.01 : 19,985.61 = 7,776.94 : x
2. Step 2: Convert to fraction form
   13,323.01/19,985.61 = 7,776.94/x
3. Step 3: Cross multiply
   13,323.01x = 19,985.61 × 7,776.94
4. Step 4: Simplify right side
   13,323.01x = 155,426,889.83
5. Step 5: Solve for x
   x = 155,426,889.83/13,323.01
6. Step 6: Final answer
   x = 11,666.05