Finding the Fourth Proportional to 12,909,492.72, 17,815,491.90 and 7,108,482.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,909,492.72 : 17,815,491.90 = 7,108,482.06 : x
2. Step 2: Convert to fraction form
   12,909,492.72/17,815,491.90 = 7,108,482.06/x
3. Step 3: Cross multiply
   12,909,492.72x = 17,815,491.90 × 7,108,482.06
4. Step 4: Simplify right side
   12,909,492.72x = 126,641,104,561,225.30
5. Step 5: Solve for x
   x = 126,641,104,561,225.30/12,909,492.72
6. Step 6: Final answer
   x = 9,809,921.06