Finding the Fourth Proportional to 10,088.61, 15,141.60 and 5,412.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,088.61 : 15,141.60 = 5,412.12 : x
2. Step 2: Convert to fraction form
   10,088.61/15,141.60 = 5,412.12/x
3. Step 3: Cross multiply
   10,088.61x = 15,141.60 × 5,412.12
4. Step 4: Simplify right side
   10,088.61x = 81,948,156.19
5. Step 5: Solve for x
   x = 81,948,156.19/10,088.61
6. Step 6: Final answer
   x = 8,122.84