Finding the Fourth Proportional to 13,068.72, 19,586.67 and 7,807.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,068.72 : 19,586.67 = 7,807.61 : x
2. Step 2: Convert to fraction form
   13,068.72/19,586.67 = 7,807.61/x
3. Step 3: Cross multiply
   13,068.72x = 19,586.67 × 7,807.61
4. Step 4: Simplify right side
   13,068.72x = 152,925,129.53
5. Step 5: Solve for x
   x = 152,925,129.53/13,068.72
6. Step 6: Final answer
   x = 11,701.61