Finding the Fourth Proportional to 9,988.91, 14,992.56 and 5,061.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,988.91 : 14,992.56 = 5,061.98 : x
2. Step 2: Convert to fraction form
   9,988.91/14,992.56 = 5,061.98/x
3. Step 3: Cross multiply
   9,988.91x = 14,992.56 × 5,061.98
4. Step 4: Simplify right side
   9,988.91x = 75,892,038.87
5. Step 5: Solve for x
   x = 75,892,038.87/9,988.91
6. Step 6: Final answer
   x = 7,597.63