Finding the Fourth Proportional to 9,989,994.12, 13,786,216.38 and 5,406,348.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,989,994.12 : 13,786,216.38 = 5,406,348.84 : x
2. Step 2: Convert to fraction form
   9,989,994.12/13,786,216.38 = 5,406,348.84/x
3. Step 3: Cross multiply
   9,989,994.12x = 13,786,216.38 × 5,406,348.84
4. Step 4: Simplify right side
   9,989,994.12x = 74,533,094,934,002
5. Step 5: Solve for x
   x = 74,533,094,934,002/9,989,994.12
6. Step 6: Final answer
   x = 7,460,774.65